Debt - Public Debt (Details) € in Millions, $ in Millions					1 Months Ended	3 Months Ended		9 Months Ended
	Aug. 23, 2024 USD ($)	Jul. 01, 2024 USD ($)	Sep. 28, 2023 USD ($)	Mar. 29, 2023 USD ($)	Jan. 31, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Aug. 22, 2024 USD ($)	Aug. 22, 2024 EUR (€)	Jun. 30, 2024 USD ($)
Debt Instrument [Line Items]
Payment for early redemption of debt								$ 5	$ 1
Loss on debt redemption						$ 6	$ 0	$ 6	$ 1
Currency Swap
Debt Instrument [Line Items]
Derivative liability | €											€ 458
Fixed interest rate (as a percent)										3.72%	3.72%
5.125% Notes, due 2024
Debt Instrument [Line Items]
Early redemption of debt		$ 205	$ 200		$ 26
Long-term debt, interest rate (as a percent)						5.125%		5.125%
Payment for early redemption of debt				$ 150
Repayments of debt				155
Interest expense				4
Loss on debt redemption				$ 1
Redemption price, amount		208	205
Accrued interest		$ 3	$ 5
6.875% Notes, due 2025
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)						6.875%		6.875%
Repurchased face amount												$ 23
4.850% Notes, due 2031
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)						4.85%		4.85%
Interest expense	$ 12
Loss on debt redemption	5
Redemption price, amount	$ 594
Aggregate principal amount										$ 500