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Employee Benefits (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Retirement Benefits, Description [Abstract]
Number of participants domestic pension plan	3,100
Number of participants postretirement benefit plan	1,400
Deferred Compensation Arrangements [Abstract]
Deferred compensation and benefit liability balance	$ 188.5	$ 197.5
Deferred compensation and benefit arrangement expense	11.0	19.4	$ 10.0
Cash Surrender Value of Life Insurance	180.8	178.2
Long-Term Disability Plan [Abstract]
Long-term disability plan obligation	8.7	$ 5.5
Long term disability plan, income replacement benefit obligation	$ 0.0

X

- Definition

Number of Participants Domestic Pension Plan

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No definition available.

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- Definition

Number of Participants Postretirement Benefit Plan

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- Definition

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 4
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121566466&loc=d3e6812-107765

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 710
-SubTopic 10
-Section 30
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

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- Definition

Liability for amount due a former employee for benefits as a result of them becoming physically or mentally impaired.

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Liability for agreement to continue an employee's salary after termination of employment (but before retirement) including death, disability, or other event. For example, a company may agree to continue a disabled employee's salary for six months.

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