Long-term Debt, Short-term Borrowings and Finance Lease Obligations - Maturities Of Our Debt and Finance Leases (Details) $ in Millions	Mar. 31, 2021 USD ($)
Debt Disclosure [Abstract]
2021	$ 351
2022	419
2023	629
2024	955
2025	305
Thereafter	$ 2,400

Scheduled maturities, Remainder of Fiscal Year, short-term borrowings, long-term debt, and finance lease obligations

No definition available.

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Scheduled maturities, Year 2, short-term borrowings, long-term debt, and finance lease obligations

No definition available.

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Scheduled maturities, Year 3, short-term borrowings, long-term debt, and finance lease obligations

No definition available.

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Scheduled maturities, Year 4, short-term borrowings, long-term debt, and finance lease obligations

No definition available.

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Scheduled maturities, Year 5, short-term borrowings, long-term debt, and finance lease obligations

No definition available.

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Scheduled maturities, after Year 5, short-term borrowings, long-term debt, and finance lease obligations

No definition available.

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No definition available.

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