Capital Stock (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Oct. 05, 2016
Class of Stock [Line Items]
Authorized amount of share repurchase program			$ 500
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Class A
Class of Stock [Line Items]
Warrants issued (in shares)	0			1,914,856
Common stock, par value (in dollars per share)				$ 0.01
Warrant exercise price (in dollars per share)				$ 57.00
Warrant exercised (in shares)	1,248,226