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Percentage of principal amount of debt redeemed.

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Face (par) amount of the original debt instrument that was repurchased.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Long-term Debt and Finance Leases - Narrative (Details) $ / shares in Units, $ in Millions			6 Months Ended
	Jul. 08, 2025 USD ($) shares	May 27, 2025 USD ($)	Jun. 30, 2025 USD ($) $ / shares	Jul. 31, 2025 USD ($)	Jul. 22, 2025 USD ($)	May 12, 2025 USD ($)	Dec. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)
Subsequent Event
Debt Instrument [Line Items]
Capped call, convertible debt, conversion, premium	$ 257
Recourse Debt
Debt Instrument [Line Items]
Borrowings outstanding			$ 11,021				$ 10,892
Senior Secured Bridge Facility \| Bridge Loan
Debt Instrument [Line Items]
Revolving credit commitments						$ 4,400
Incremental Term Loan B Facility \| Term Loan \| Subsequent Event
Debt Instrument [Line Items]
Revolving credit commitments					$ 1,000
Revolving Credit Facility \| Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Revolving credit commitments		$ 4,600
Increase revolving commitments		$ 390
Revolving Credit Facility \| Revolving Credit Facility \| Recourse Debt
Debt Instrument [Line Items]
Borrowings outstanding			$ 135				0
Convertible Senior Notes, due 2048 \| Subsequent Event
Debt Instrument [Line Items]
Aggregate principal redeemed	$ 12
Redemption price, percentage	100.00%
Cash paid	$ 220
Debt conversion, shares issued (in shares) \| shares	3,986,335
Convertible Senior Notes, due 2048 \| Recourse Debt
Debt Instrument [Line Items]
Convertible notes, conversion price (in usd per share) \| $ / shares			$ 40.63
Conversion rate			0.0246144
Convertible notes, carrying amount			$ 232				231
Capped call, convertible debt, conversion, premium								$ 257
Borrowings outstanding			$ 232				$ 232	$ 232
Interest rate			2.75%
TEF loan \| Subsequent Event \| Public Utility Commission of Texas
Debt Instrument [Line Items]
Debt issuance amount				$ 216
Interest rate				3.00%