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Income Taxes (Details 3) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Valuation allowance
Unrecognized tax benefits	$ 144.7	$ 134.0
Portion of unrecognized tax benefits, which if recognized, would be recorded as an income tax benefit	3.2
Long-term deferred tax assets
Valuation allowance
Unrecognized tax benefits	24.0	23.6
Other assets | Foreign tax authority | National Tax Services
Valuation allowance
Unrecognized tax benefits	117.5	109.0
Long-term income taxes payable
Valuation allowance
Unrecognized tax benefits	$ 3.2	$ 1.9

X

- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 10B
-URI http://asc.fasb.org/extlink&oid=120406818&loc=SL37586934-109318

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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