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Fair Value of Financial Instruments - Balance Sheet Grouping (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion	$ 7,131	$ 7,782
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion	6,617	7,997
Fair Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion	1,795	2,159
Fair Value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current portion	$ 4,822	$ 5,838

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Amount of long-term debt and lease obligation, including portion classified as current.

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