Long-Term Debt - Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Debt, outstanding note	$ 11,500	$ 14,500
Debt, discounts and premiums	16	19
Unamortized debt issuance costs	24	31
Additions for mark-to-market adjustments on hedged debt	$ 396	$ 534

Amount, after accumulated amortization, of debt discount (premium).

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant