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Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	3 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2020	Jul. 31, 2016	Mar. 31, 2021	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Aug. 06, 2020	Feb. 29, 2012
Class of Stock [Line Items]
Number of shares purchased from plan participants (in shares)			108,287
Dividend per common share (in usd per share)			$ 0		$ 0
Integrated Global Concepts, Inc
Class of Stock [Line Items]
Shares acquired and subsequently retired (in shares)		935,231
2012 Repurchase Program
Class of Stock [Line Items]
Maximum number of shares authorized to be repurchased (in shares)									5,000,000
Shares repurchased under the program (in shares)					1,140,819	197,870	600,000
Aggregate cost of shares repurchased	$ 204.6				$ 87.5	$ 16.0	$ 42.5
2020 Repurchase Program
Class of Stock [Line Items]
Maximum number of shares authorized to be repurchased (in shares)								10,000,000,000,000
Shares repurchased under the program (in shares)			0	2,490,599
Aggregate cost of shares repurchased				$ 177.8

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