Condensed Consolidated Statements of Operations and Comprehensive Income (Parenthetical) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Gain (loss) from disposal of discontinued businesses, tax expense (benefit)	$ 1.7	$ (1.4)

Amount of tax expense (benefit) on gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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Balance Type:	debit
Period Type:	duration