CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) - $ / shares	Dec. 31, 2023	Dec. 31, 2022
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	25,000,000.0	25,000,000.0
Preferred stock, shares issued (in shares)	0	0
Treasury stock, shares (in shares)	13,900,000	10,500,000
Common Class A
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000.0	500,000,000.0
Common stock, shares issued (in shares)	2,600,000	2,600,000
Common Class B
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000.0	500,000,000.0
Common stock, shares issued (in shares)	212,500,000	210,500,000
Class A exchangeable shares
Exchangeable stock, shares issued (in shares)	2,700,000	2,700,000
Exchangeable stock, shares outstanding (in shares)	2,700,000	2,700,000
Class B exchangeable shares
Exchangeable stock, shares issued (in shares)	9,400,000	9,400,000
Exchangeable stock, shares outstanding (in shares)	11,000,000.0	11,000,000.0