Stock-Based Compensation - Stock-Based Compensation Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Per share intrinsic value of non-vested stock granted (in dollars per share)	$ 294.32	$ 312.83	$ 130.89
Weighted average per share discount for compensation expense recognized under the 2009 ESPP (in dollars per share)	$ 38.57	$ 50.58	$ 22.97
Fair value of non-vested stock that vested during the period ($ in millions)	$ 110.8	$ 107.5	$ 108.5
Tax benefit recognized in Consolidated Statements of Operations ($ in millions)	12.4	11.9	3.7
Cash received from options exercised and shares purchased under all share-based arrangements ($ in millions)	34.4	29.6	14.8
Tax deduction realized related to stock options exercised ($ in millions)	43.7	41.8	13.6
Selling, General and Administrative Expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation recognized in Consolidated Statements of Operations, as a component of selling, general and administrative expense ($ in millions)	$ 41.1	$ 34.7	$ 23.2