Long-Term Debt and Credit Facilities - Level 3 Financing Credit Agreement and Guarantees (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024	Mar. 22, 2024
Long-term debt
Net (loss) gain on early retirement of debt	$ (236)	$ 0	$ (270)	$ 54
Financial Guarantee
Long-term debt
Maximum guaranteed amount						$ 150
Term loan | Term Loan B-3
Long-term debt
Amount outstanding	2,400		$ 2,400		$ 0
Net (loss) gain on early retirement of debt	$ (34)
Basis spread on variable rate (as a percent)			4.25%
Prepayment premium (as a percent)			1.00%
Prepayment from net cash proceeds of certain asset sales (as a percent)			100.00%
Prepayment from net cash proceeds of certain debt issuances (as a percent)			100.00%
Term loan | Term Loan B-3 | Fed Funds Rate
Long-term debt
Basis spread on variable rate (as a percent)			0.50%
Term loan | Term Loan B-3 | One-Month SOFR
Long-term debt
Basis spread on variable rate (as a percent)			1.00%
Term loan | Term Loan B-3 | SOFR
Long-term debt
Basis spread on variable rate (as a percent)			4.25%
Term loan | Term Loan B-3 | SOFR | Minimum
Long-term debt
Basis spread on variable rate (as a percent)			0.50%