Long-term Debt - PAC - Maturity Schedule (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
2023	$ 3,201
2024	3,018
2025	2,658
2026	1,430
2027	915
2028 and thereafter	40,480
Total	51,702
Total long-term debt	51,635	$ 49,762
PAC
Debt Instrument [Line Items]
Total long-term debt	9,666	$ 8,730
PAC \| Long-term Debt
Debt Instrument [Line Items]
2023	449
2024	591
2025	302
2026	100
2027	0
2028 and thereafter	8,300
Total	9,742
Unamortized discount and debt issuance costs	(76)
Total long-term debt	$ 9,666

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