Debt (Convertible Notes) (Details) - Convertible notes - USD ($) shares in Thousands, $ in Millions		1 Months Ended
	Nov. 30, 2023	Jun. 30, 2023	Aug. 31, 2022
Convertible Senior Notes 4.25%, Due 2023
Long-Term Debt
Outstanding balance		$ 350
Interest rate		4.25%	4.25%
Convertible notes cash settlement		$ 338
Convertible notes shares issued (in shares)		374
Convertible Senior Notes 2.875%, Due 2023
Long-Term Debt
Outstanding balance	$ 225
Interest rate	2.875%		2.875%
Convertible notes cash settlement	$ 225
Convertible notes shares issued (in shares)	147