Debt and Finance Lease Obligations, Principal Maturities (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Principal Payments Due on Debt
2022	[1]	$ 1,110
2023		20
2024		169
2025		1,374
2026		1,726
Thereafter		7,637
Net unamortized debt issuance costs and other		(86)	$ (90)
Total debt		$ 11,950
Revenue Bonds [Member] | Gulf Opportunity Zone Revenue Bonds, Series 2010, 4.00% Due in 2040 [Member]
Principal Maturities (Textual)
Interest rate (percent)		4.00%

[1] Maturities for 2022 include the DGD Revolver, the DGD Loan Agreement, the IEnova Revolver, and our 4.00 percent Gulf Opportunity Zone Revenue Bonds Series 2010 (GO Zone Bonds). Our GO Zone Bonds are due December 1, 2040, but they are subject to mandatory tender on June 1, 2022 (the Mandatory Tender Date) at a price equal to par plus accrued and unpaid interest up to, but excluding, the Mandatory Tender Date, and are reflected in current portion of debt and finance lease obligations as of December 31, 2021.