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Fair Value Measurements - Carrying Amounts of Long-term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Carrying Value
Fair value and related carrying amounts of long-term debt and other long-term obligations
Long-term debt and other long-term obligations	$ 22,900	$ 23,946
Fair Value
Fair value and related carrying amounts of long-term debt and other long-term obligations
Long-term debt and other long-term obligations	$ 23,754	$ 27,043

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- Definition

Fair value and related carrying amounts of long-term debt and other long-term obligations.

+ References

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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