Debt and Other Obligations Contractual Maturities (Details) - USD ($) $ in Millions		Sep. 30, 2023	Dec. 31, 2022
Contractual Obligation, Fiscal Year Maturity Schedule [Abstract]
Long-Term Debt, Maturity, remainder of year	[1]	$ 1,819
Long-Term Debt, Maturity, Year One		835
Long-Term Debt, Maturity, Year Two		597
Long-Term Debt, Maturity, Year Three		2,775
Long-Term Debt, Maturity, Year Four		3,406
Long-Term Debt, Maturity, after Year Five		13,456
Total Cash Obligations		22,888
Unamortized Adjustments, Net		(158)
Debt and Finance Lease Obligations		$ 22,730	$ 21,729

[1] Predominately consists of outstanding indebtedness under the CP Program as discussed in footnote (g) of the preceding table.