Debt - Public Debt (Details) - USD ($) $ in Millions		1 Months Ended		6 Months Ended
	Sep. 28, 2023	Mar. 31, 2023	Jan. 31, 2023	Jun. 30, 2023	Jun. 30, 2022
Debt Instrument [Line Items]
Payment for early redemption of debt				$ 1	$ 2
5.125% Notes, due 2024
Debt Instrument [Line Items]
Early redemption of debt			$ 26
Long-term debt, interest rate (as a percent)		5.125%	5.125%	5.125%
Payment for early redemption of debt		$ 150
Repayments of debt		155
Interest expense		4
Early termination premium		$ 1
5.125% Notes, due 2024 | Subsequent Event | Forecast
Debt Instrument [Line Items]
Early redemption of debt	$ 200
Long-term debt, interest rate (as a percent)	5.125%
Repayments of debt	$ 205
Redemption price (as a percent)	100.00%
5.125% Notes, due 2024 | Subsequent Event | Forecast | US Treasury (UST) Interest Rate
Debt Instrument [Line Items]
Basis spread (as a percent)	0.40%