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Leases - Lease Maturities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Operating
2022	$ 30
2023	26
2024	20
2025	16
2026	10
Thereafter	61
Subtotal - undiscounted lease payments	163
Less imputed interest	(29)
Total operating lease liabilities	134	$ 76
Finance
2022	29
2023	27
2024	24
2025	22
2026	23
Thereafter	243
Subtotal - undiscounted lease payments	368
Less imputed interest	(134)
Total finance lease liabilities	$ 234	$ 237

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