Annual report pursuant to Section 13 and 15(d)

Leases - Supplemental balance sheet information related to leases (Details)

v3.20.4
Leases - Supplemental balance sheet information related to leases (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Leases    
Operating lease right-of-use assets $ 465 $ 510
Operating lease right-of-use assets location us-gaap:OtherAssetsNoncurrent us-gaap:OtherAssetsNoncurrent
Current operating lease liabilities $ 54 $ 53
Current operating lease liabilities location us-gaap:OtherLiabilitiesCurrent us-gaap:OtherLiabilitiesCurrent
Operating lease liabilities $ 453 $ 495
Operating lease liabilities location us-gaap:OtherLiabilitiesNoncurrent us-gaap:OtherLiabilitiesNoncurrent
Total operating lease liabilities $ 507 $ 548
Property and equipment, at cost 4,017 3,780
Accumulated depreciation (1,778) (1,518)
Property and equipment, net 2,239 2,262
Current finance lease liabilities $ 6 $ 4
Current finance lease liabilities location us-gaap:OtherLiabilitiesCurrent us-gaap:OtherLiabilitiesCurrent
Finance lease noncurrent liabilities $ 116 $ 119
Finance lease liabilities location us-gaap:OtherLiabilitiesNoncurrent us-gaap:OtherLiabilitiesNoncurrent
Total finance lease liabilities $ 122 $ 123
Finance Leases    
Leases    
Property and equipment, at cost 477 473
Accumulated depreciation (118) (89)
Property and equipment, net $ 359 $ 384