Shareholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2021
Shareholders' Equity [Abstract]
Summary of Share Repurchases	The following is a summary of the Company’s share repurchases: For the three months For the nine months ended September 30, ended September 30, 2021 2020 2021 2020 Total number of shares purchased (in millions) (1) 0.4 0.6 1.1 1.4Average price paid per share (1) $ 340.70 $ 302.63 $ 291.48 $ 267.57Total price paid (in millions) (1) $ 150.0 $ 175.6 $ 318.9 $ 375.6 Subsequent to September 30, 2021, the Company made the following share repurchases: Total number of shares purchased (in millions) (1) 0.6Average price paid per share (1) $ 332.72Total price paid (in millions) (1) $ 200.0 (1)Amounts reflected are based on the trade date and differ from the Consolidated Statements of Cash Flows which reflects share repurchases based on the settlement date.
Schedule of Dividends Paid and Dividends Declared	For the nine months ended September 30, 2021, the Company paid the following cash dividends: Payable to Shareholders of Record at the Close Cash Paid Aggregate Amount Date Declared of Business on Per Share Paid Date Paid February 19, 2021 March 10, 2021 $0.58 $63.4 million March 26, 2021April 26, 2021 May 20, 2021 $0.58 $63.4 million June 15, 2021August 1, 2021 August 26, 2021 $0.58 $63.6 million September 23, 2021 Dividends paid in 2021 and 2020 were ordinary income. Subsequent to September 30, 2021, the Company declared the following cash dividends: Payable to Shareholders Cash to of Record at the Close be Paid Date Declared of Business on Per Share Date to be Paid November 1, 2021 November 18, 2021 $0.58 December 16, 2021