Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b)(2))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Name:	us-gaap_RestructuringReserveAccrualAdjustment1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Restructuring Expenses (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Ownership percentage in joint venture		50.00%	50.00%
Gain on sale of Joint Venture	$ 3.7	$ 0.7
Loss on Sale of Joint Venture
Restructuring Cost and Reserve [Line Items]
Restructuring Charges Excluding Adjustments			$ 2.1
Gain on Sale of Joint Venture
Restructuring Cost and Reserve [Line Items]
Gain on sale of Joint Venture	$ 2.5	$ 0.0