Equity - Share Repurchase Plan, Preferred Stock (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) item $ / shares shares	Dec. 31, 2021 USD ($) item $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Jul. 26, 2022 USD ($)
Share Repurchase Plan
Value of shares authorized by the Board of Directors to be repurchased under share repurchase plan | $				$ 1,000.0
Remaining value of shares authorized by the Board of Directors to be repurchased under share repurchase plan | $	$ 680.7
Repurchase of common shares (in shares)	3,525,000	2,107,000	3,674,000
Average costs per share | $ / shares	$ 178.81	$ 153.55	$ 91.80
Value of shares repurchased | $	$ 630.3	$ 323.5	$ 337.3
Preferred Stock
Preferred stock, authorized shares	5,000,000	5,000,000
Preferred stock, par value (in dollars per share) | $ / shares	$ 0.001	$ 0.001
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Minimum number of series in which preferred shares may be issued | item	1	1
Issued and outstanding common shares, beginning balance (in shares)	61,806,000	63,600,000	66,854,000
Issued to settle RSUs and PSUs, net of withheld shares (in shares)	506,000	313,000	414,000
Issued for stock options exercised (in shares)			6,000
Repurchased (in shares)	(3,525,000)	(2,107,000)	(3,674,000)
Issued and outstanding common shares, ending balance (in shares)	58,787,000	61,806,000	63,600,000