Debt - Narrative (Details) € in Millions, $ in Millions	1 Months Ended	9 Months Ended		12 Months Ended
	May 31, 2025 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)	Oct. 31, 2025 EUR (€)
Debt Instrument [Line Items]
Debt issuance costs		$ 10	$ 10
Fair Value, Inputs, Level 2
Debt Instrument [Line Items]
Long-term debt fair value		$ 6,500		$ 6,255
Senior Notes and Debentures | U.S. dollar at 4.75% due 2026
Debt Instrument [Line Items]
Debt, face amount	$ 875
Debt instrument, stated percentage	4.75%
Senior Notes and Debentures | Euro at 2.875% due 2026 | Subsequent Event
Debt Instrument [Line Items]
Debt, face amount | €					€ 500
Debt instrument, stated percentage					2.875%
Senior Notes and Debentures | U.S. dollar at 5.875% due 2033
Debt Instrument [Line Items]
Debt, face amount	$ 700
Debt instrument, stated percentage	5.875%	5.875%
Debt issuance costs	$ 10
Senior Notes and Debentures | U.S. dollar at 4.75% due 2026
Debt Instrument [Line Items]
Debt instrument, stated percentage		4.75%
Senior Notes and Debentures | Euro at 3.75% due 2031 | Subsequent Event
Debt Instrument [Line Items]
Debt, face amount | €					€ 500
Debt instrument, stated percentage					3.75%
Senior Secured Borrowings | SOFR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)		1.10%		1.10%
Senior Secured Borrowings | EURIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)		1.00%		1.00%