Debt Maturities of Long-term Debt (Details 2) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Maturities of Long-term Debt [Abstract]
2022	$ 6
2023	1,063
2024	3
2025	1,503
2026	530
Thereafter	9,757
Total principal payments	12,862
Unamortized premium on long-term debt, net of discount	(14)
Debt issuance costs	(65)	$ (75)
Total long-term debt	$ 12,783

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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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.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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