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Debt, Interest Incurred (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Interest and Debt Expense, Net of Capitalized Interest |  |  |  |
Interest and debt expense | $ 161 | $ 136 | $ 306 | $ 272
Less: Capitalized interest | 19 | 24 | 39 | 48
Interest and debt expense, net of capitalized interest | $ 142 | $ 112 | $ 267 | $ 224

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