Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Stockholders' Equity Note [Abstract]
Dividends	$ 15.6	$ 12.4
Aggregate number of shares repurchased during the period (in shares)	878,305
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	1,000,000
Shares repurchased under the program (in shares)	728,000
Authorized to repurchased additional shares under repurchase program (in shares)	685,833
Shares withheld for tax withholding obligations for the vesting of restricted stock awards (in shares)	150,305
Dividends declared per share of common stock (in dollars per share)	$ 0.40	$ 0.30