XML 73 R63.htm IDEA: XBRL DOCUMENT v3.21.2
Leases - Supplemental cash flow information (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Leases [Abstract]    
Operating cash flows for operating leases $ 94 $ 39
Financing cash flows for finance leases 3 2
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability 69 37
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability $ 16 $ 4