Amount, before tax, of (gain) loss recognized for the (reversal of write-down) write-down to fair value, less cost to sell, of a disposal group. Excludes discontinued operations.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Name Accounting Standards Codification
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Name:	us-gaap_DisposalGroupNotDiscontinuedOperationLossGainOnWriteDown
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Assets and Liabilities Held for Sale (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Oct. 09, 2020	Feb. 26, 2020
Disposal Groups [Line Items]
Purchase Price						$ 1,100.0
Loss on classification as held for sale	$ 35.6	$ 0.0	$ 400.2	$ 0.0
Subsequent Event
Disposal Groups [Line Items]
Net Proceeds from Sale					$ 1,112.6