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Leases - Maturity of Lease Liabilities (Details) $ in Millions	Dec. 31, 2019 USD ($)
Operating
2020	$ 109
2021	87
2022	79
2023	60
2024	48
Thereafter	279
Total	662
Less: Present value discount	(181)
Lease liabilities	481
Finance
2020	21
2021	12
2022	12
2023	9
2024	9
Thereafter	29
Total	92
Less: Present value discount	(25)
Lease liabilities	67
Equity Method Investees
Finance
2020	2
2021	2
2022	2
2023	2
2024	2
Thereafter	23
Lease liabilities	$ 12

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