Restructuring and Related Expenses (Restructuring Reserve Roll Forward) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2020
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 1.6	$ 6.8
Charges	14.3	14.3
Settlements	0.0	(4.4)
Adjustments to previous estimates	0.0	(0.8)
Ending Balance	15.9	15.9
Employee Separation Costs
Restructuring Reserve [Roll Forward]
Beginning Balance	1.6	3.3
Charges	14.3	14.3
Settlements	0.0	(1.4)
Adjustments to previous estimates	0.0	(0.3)
Ending Balance	15.9	15.9
Other
Restructuring Reserve [Roll Forward]
Beginning Balance	0.0	3.5
Charges	0.0	0.0
Settlements	0.0	(3.0)
Adjustments to previous estimates	0.0	(0.5)
Ending Balance	$ 0.0	$ 0.0

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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- Definition

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

+ References

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

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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(d))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

+ Details

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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