XML 106 R91.htm IDEA: XBRL DOCUMENT

Income Taxes - Effective Income Tax Rate Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Valuation allowance, deferred tax asset, increase (decrease), amount		$ 14.5	$ 25.4	$ 16.0
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	$ 25.3	12.2		3.7
Income tax benefit of goodwill impairment loss				85.0
United States
Valuation allowance, deferred tax asset, increase (decrease), amount		5.3
Foreign Tax Authority [Member]
Valuation allowance, deferred tax asset, increase (decrease), amount			12.8	3.1
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities				$ 20.0
Settlement with Taxing Authority [Member]
Other Tax Expense (Benefit)		6.8
Loss carryback related to the CARES Act [Member]
Other Tax Expense (Benefit)		$ (14.4)
Transition tax [Member]
Other Tax Expense (Benefit)			$ 9.3