Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=116821951&loc=d3e32059-109318

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

Name:	us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Income Taxes - Tax Cuts and Jobs Act Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Tax Cuts and Jobs Act [Line Items]
Transition tax	$ (7.5)	$ 5.8	$ 108.3
Change in enacted tax rate	$ (0.2)	8.3	107.6
Net adjustment for provisional amounts recorded under Tax Cuts and Jobs Act		$ 2.5
Transition tax [Member]
Tax Cuts and Jobs Act [Line Items]
Other Tax Expense (Benefit)			108.0
Tax Cuts and Jobs Act [Member]
Tax Cuts and Jobs Act [Line Items]
Other Tax Expense (Benefit)			(20.0)
Remeasurement of net deferred tax liabilities due to change in tax rate [Member]
Tax Cuts and Jobs Act [Line Items]
Other Tax Expense (Benefit)			(110.0)
Reduction of Deferred Tax Liability on Foreign Earnings [Member]
Tax Cuts and Jobs Act [Line Items]
Other Tax Expense (Benefit)			$ (18.0)