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Debt, Interest Incurred (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Interest and Debt Expense, Net of Capitalized Interest |  |
Interest and debt expense | $ 145 | $ 136
Less: Capitalized interest | 20 | 24
Interest and debt expense, net of capitalized interest | $ 125 | $ 112

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