Condensed Consolidated Statements of Comprehensive Income (Loss) Parentheticals - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Net Investment Hedging [Member]
Foreign currency hedges, amount recognized in other comprehensive income, tax	$ 0.0	$ 0.3
Interest rate hedges
Interest rate hedges, net gain recognized in other comprehensive income, tax	0.4	(4.1)
Pension and other post-retirement benefits
Net actuarial loss amortization, tax	$ 0.5	$ 3.5

Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 21
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-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 12
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of tax expense (benefit), before reclassification adjustments, related to increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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