| Stock-Based Compensation (Tables)
 | 6 Months Ended | 
| Jun. 30, 2016 | 
|---|
| Schedule of Stock-Based Compensation Allocation of Expense |  
		
			
				| 
						  | 
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						  | 
						  | 
						  | 
						  | 
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				| 
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						  | 
						Three months ended   | 
						  | 
						Six months ended  | 
						  |  
				| 
						  | 
						  | 
						June 30,  | 
						  | 
						June 30,  | 
						  |  
				| 
						  | 
						     | 
						2016 | 
						     | 
						2015 | 
						     | 
						2016 | 
						     | 
						2015 | 
						  |  
				| 
						  | 
						  | 
						(amounts in millions) | 
						  |  
				| 
						Cost of subscriber services: | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Programming and content | 
						  | 
						$ | 4 | 
						  | 4 | 
						  | 8 | 
						  | 8 | 
						  |  
				| 
						Customer service and billing | 
						  | 
						  | 1 | 
						  | 2 | 
						  | 2 | 
						  | 3 | 
						  |  
				| 
						Other | 
						  | 
						  | 1 | 
						  | 2 | 
						  | 2 | 
						  | 4 | 
						  |  
				| 
						Other operating expense | 
						  | 
						  | 3 | 
						  | 4 | 
						  | 6 | 
						  | 8 | 
						  |  
				| 
						Selling, general and administrative | 
						  | 
						  | 25 | 
						  | 35 | 
						  | 50 | 
						  | 68 | 
						  |  
				| 
						  | 
						  | 
						$ | 34 | 
						  | 47 | 
						  | 68 | 
						  | 91 | 
						  | 
			 
		 | 
| Liberty Sirius XM Group | Common Class A |  | 
| Schedule of Stock-Based Compensation Activity |  
		
			
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						  | 
						  | 
						Series A | 
						  |  
				| 
						  | 
						     | 
						     | 
						     | 
						  | 
						     | 
						Weighted | 
						     | 
						Aggregate | 
						  |  
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						average | 
						  | 
						intrinsic | 
						  |  
				| 
						  | 
						  | 
						Liberty | 
						  | 
						  | 
						  | 
						remaining | 
						  | 
						value | 
						  |  
				| 
						  | 
						  | 
						Awards (000's) | 
						  | 
						WAEP | 
						  | 
						life | 
						  | 
						(millions) | 
						  |  
				| 
						Outstanding at January 1, 2016 | 
						  | 
						  — | 
						  | 
						$ | 
						  — | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Recapitalization adjustment | 
						  | 2,235 | 
						  | 
						$ | 19.33 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Granted | 
						  | 
						  — | 
						  | 
						$ | 
						  — | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Exercised | 
						  | (46) | 
						  | 
						$ | 18.15 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Forfeited/Cancelled | 
						  | 
						  — | 
						  | 
						$ | 
						  — | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Outstanding at June 30, 2016 | 
						  | 2,189 | 
						  | 
						$ | 19.35 | 
						  | 2.7 | 
						years | 
						  | 
						$ | 26 | 
						  |  
				| 
						Exercisable at June 30, 2016 | 
						  | 2,105 | 
						  | 
						$ | 19.25 | 
						  | 2.6 | 
						years | 
						  | 
						$ | 25 | 
						  | 
			 
		 | 
| Liberty Sirius XM Group | Common Class C |  | 
| Schedule of Stock-Based Compensation Activity |  
		
			
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						  | 
						  | 
						Series C | 
						  |  
				| 
						  | 
						     | 
						     | 
						     | 
						  | 
						     | 
						Weighted | 
						     | 
						Aggregate | 
						  |  
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						average | 
						  | 
						intrinsic | 
						  |  
				| 
						  | 
						  | 
						Liberty | 
						  | 
						  | 
						  | 
						remaining | 
						  | 
						value | 
						  |  
				| 
						  | 
						  | 
						Awards (000's) | 
						  | 
						WAEP | 
						  | 
						life | 
						  | 
						(millions) | 
						  |  
				| 
						Outstanding at January 1, 2016 | 
						  | 
						  — | 
						  | 
						$ | 
						  — | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Recapitalization adjustment | 
						  | 11,154 | 
						  | 
						$ | 25.34 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Granted | 
						  | 346 | 
						  | 
						$ | 31.66 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Exercised | 
						  | (71) | 
						  | 
						$ | 18.93 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Forfeited/Cancelled | 
						  | (1) | 
						  | 
						$ | 28.27 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Outstanding at June 30, 2016 | 
						  | 11,428 | 
						  | 
						$ | 25.57 | 
						  | 4.8 | 
						years | 
						  | 
						$ | 63 | 
						  |  
				| 
						Exercisable at June 30, 2016 | 
						  | 4,940 | 
						  | 
						$ | 20.57 | 
						  | 3.1 | 
						years | 
						  | 
						$ | 51 | 
						  | 
			 
		 | 
| Liberty Braves Group | Common Class A |  | 
| Schedule of Stock-Based Compensation Activity |  
		
			
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						  | 
						  | 
						Series A | 
						  |  
				| 
						  | 
						     | 
						     | 
						     | 
						  | 
						     | 
						Weighted | 
						     | 
						Aggregate | 
						  |  
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						average | 
						  | 
						intrinsic | 
						  |  
				| 
						  | 
						  | 
						Liberty | 
						  | 
						  | 
						  | 
						remaining | 
						  | 
						value | 
						  |  
				| 
						  | 
						  | 
						Awards (000's) | 
						  | 
						WAEP | 
						  | 
						life | 
						  | 
						(millions) | 
						  |  
				| 
						Outstanding at January 1, 2016 | 
						  | 
						  — | 
						  | 
						$ | 
						  — | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Recapitalization adjustment | 
						  | 207 | 
						  | 
						$ | 11.30 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Granted | 
						  | 
						  — | 
						  | 
						$ | 
						  — | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Exercised | 
						  | (10) | 
						  | 
						$ | 11.42 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Forfeited/Cancelled | 
						  | 
						  — | 
						  | 
						$ | 
						  — | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Outstanding at June 30, 2016 | 
						  | 197 | 
						  | 
						$ | 11.30 | 
						  | 2.8 | 
						years | 
						  | 
						$ | 1 | 
						  |  
				| 
						Exercisable at June 30, 2016 | 
						  | 190 | 
						  | 
						$ | 11.26 | 
						  | 2.7 | 
						years | 
						  | 
						$ | 1 | 
						  | 
			 
		 | 
| Liberty Braves Group | Common Class C |  | 
| Schedule of Stock-Based Compensation Activity |  
		
			
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						  | 
						  | 
						Series C | 
						  |  
				| 
						  | 
						     | 
						     | 
						     | 
						  | 
						     | 
						Weighted | 
						     | 
						Aggregate | 
						  |  
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						average | 
						  | 
						intrinsic | 
						  |  
				| 
						  | 
						  | 
						Liberty | 
						  | 
						  | 
						  | 
						remaining | 
						  | 
						value | 
						  |  
				| 
						  | 
						  | 
						Awards (000's) | 
						  | 
						WAEP | 
						  | 
						life | 
						  | 
						(millions) | 
						  |  
				| 
						Outstanding at January 1, 2016 | 
						  | 
						  — | 
						  | 
						$ | 
						  — | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Recapitalization adjustment | 
						  | 1,071 | 
						  | 
						$ | 14.74 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Granted | 
						  | 32 | 
						  | 
						$ | 15.11 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Exercised | 
						  | (20) | 
						  | 
						$ | 11.19 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Forfeited/Cancelled | 
						  | 
						  — | 
						  | 
						$ | 
						  — | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Outstanding at June 30, 2016 | 
						  | 1,083 | 
						  | 
						$ | 14.82 | 
						  | 4.9 | 
						years | 
						  | 
						$ | 1 | 
						  |  
				| 
						Exercisable at June 30, 2016 | 
						  | 447 | 
						  | 
						$ | 12.02 | 
						  | 3.2 | 
						years | 
						  | 
						$ | 1 | 
						  | 
			 
		 | 
| Liberty Media Group | Common Class A |  | 
| Schedule of Stock-Based Compensation Activity |  
		
			
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						  | 
						  | 
						Series A | 
						  |  
				| 
						  | 
						     | 
						     | 
						     | 
						  | 
						     | 
						Weighted | 
						     | 
						Aggregate | 
						  |  
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						average | 
						  | 
						intrinsic | 
						  |  
				| 
						  | 
						  | 
						Liberty | 
						  | 
						  | 
						  | 
						remaining | 
						  | 
						value | 
						  |  
				| 
						  | 
						  | 
						Awards (000's) | 
						  | 
						WAEP | 
						  | 
						life | 
						  | 
						(millions) | 
						  |  
				| 
						Outstanding at January 1, 2016 | 
						  | 2,360 | 
						  | 
						$ | 23.36 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Granted | 
						  | 
						  — | 
						  | 
						$ | 
						  — | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Exercised | 
						  | (162) | 
						  | 
						$ | 22.47 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Forfeited/Cancelled | 
						  | 
						  — | 
						  | 
						$ | 
						  — | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Recapitalization adjustment | 
						  | (1,682) | 
						  | 
						$ | 10.64 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Outstanding at June 30, 2016 | 
						  | 516 | 
						  | 
						$ | 11.56 | 
						  | 2.8 | 
						years | 
						  | 
						$ | 4 | 
						  |  
				| 
						Exercisable at June 30, 2016 | 
						  | 496 | 
						  | 
						$ | 11.52 | 
						  | 2.7 | 
						years | 
						  | 
						$ | 4 | 
						  | 
			 
		 | 
| Liberty Media Group | Common Class C |  | 
| Schedule of Stock-Based Compensation Activity |  
		
			
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						  | 
						  | 
						Series C | 
						  |  
				| 
						  | 
						     | 
						     | 
						     | 
						  | 
						     | 
						Weighted | 
						     | 
						Aggregate | 
						  |  
				| 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						average | 
						  | 
						intrinsic | 
						  |  
				| 
						  | 
						  | 
						Liberty | 
						  | 
						  | 
						  | 
						remaining | 
						  | 
						value | 
						  |  
				| 
						  | 
						  | 
						Awards (000's) | 
						  | 
						WAEP | 
						  | 
						life | 
						  | 
						(millions) | 
						  |  
				| 
						Outstanding at January 1, 2016 | 
						  | 10,613 | 
						  | 
						$ | 30.09 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Granted | 
						  | 869 | 
						  | 
						$ | 35.87 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Exercised | 
						  | (381) | 
						  | 
						$ | 22.19 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Forfeited/Cancelled | 
						  | (1) | 
						  | 
						$ | 36.95 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Recapitalization adjustment | 
						  | (8,351) | 
						  | 
						$ | 14.08 | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  | 
						  |  
				| 
						Outstanding at June 30, 2016 | 
						  | 2,749 | 
						  | 
						$ | 14.88 | 
						  | 4.9 | 
						years | 
						  | 
						$ | 11 | 
						  |  
				| 
						Exercisable at June 30, 2016 | 
						  | 1,157 | 
						  | 
						$ | 11.99 | 
						  | 3.1 | 
						years | 
						  | 
						$ | 8 | 
						  | 
			 
		 |