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Leases - Lease Commitments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Operating Leases
2022	$ 151
2023	152
2024	130
2025	91
2026	73
Thereafter	443
Total minimum lease payments	1,040
Less: amount of lease payment representing interest	(244)
Present value of future minimum lease payment	796
Less: current obligations under leases	(106)	$ (113)
Operating lease liabilities	690	752
Finance Leases
2022	1
2023	2
2024	0
2025	0
2026	0
Thereafter	0
Total minimum lease payments	3
Less: amount of lease payment representing interest	0
Present value of future minimum lease payment	3	63
Less: current obligations under leases	(1)	(37)
Finance lease liabilities	$ 2	$ 26

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