Annual report pursuant to Section 13 and 15(d)

Leases - Components of lease expense (Details)

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Leases - Components of lease expense (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Finance lease cost      
Depreciation of leased assets $ 35 $ 35 $ 37
Interest on lease liabilities 6 6 6
Total finance lease cost 41 41 43
Operating lease cost 89 93 89
Sublease income (4) (2) (3)
Total lease cost $ 126 $ 132 $ 129