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Leases (Other Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating cash flows from operating leases	$ 28.8	$ 29.6
Right-of-use assets obtained in exchange for lease obligations, operating leases	$ 9.0	$ 35.5
Weighted average remaining lease term, operating leases (in years)	6 years 4 months 24 days
Weighted average discount rate, operating leases (as a percentage)	5.20%

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918643-209977

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-Publisher FASB
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-Section 50
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Weighted average discount rate for operating lease calculated at point in time.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 55
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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
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