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Leases - Undiscounted Cash Flows under ASC 842 (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Operating Leases
2023	$ 11	$ 16
2024	8	9
2025	3	7
2026	1	2
2027	0	1
Thereafter	0	0
Total minimum lease payments	23	35
Less: amount of lease payments representing interest	(5)	(5)
Present value of future minimum lease payments	18	30
Less: current obligations under leases	(8)	(12)
Long-term lease obligations	10	18
Finance Lease, Liability, Payment, Due [Abstract]
2023	72	80
2024	39	44
2025	17	11
2026	0	0
2027	0	0
Thereafter	0	0
Total minimum lease payments	128	135
Less: amount of lease payments representing interest	(7)	(5)
Present value of future minimum lease payments	121	130
Less: current obligations under leases	(67)	(77)
Long-term lease obligations	$ 54	$ 53

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