XML 42 R31.htm IDEA: XBRL DOCUMENT
v3.21.2

Income Taxes (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2021
Income Tax Disclosure [Abstract] |
Roll-forward of Unrecognized Tax Benefits and Associated Accrued Interest and Penalties | A roll-forward of unrecognized tax benefits and associated accrued interest and penalties is as follows:
(in millions) |  | Unrecognized Tax Benefits |  |  | Interest and Penalties |  |  | Total |
Opening balance at January 1, 2021 |  | $ | 13.6 |  |  | $ | 2.4 |  |  | $ | 16.0 |
Net change for tax positions of prior periods |  |  | (0.1 | ) |  |  | 0.4 |  |  |  | 0.3 |
Closing balance at June 30, 2021 |  |  | 13.5 |  |  |  | 2.8 |  |  |  | 16.3 |
Current |  |  | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 |
Non-current |  | $ | 13.5 |  |  | $ | 2.8 |  |  | $ | 16.3 |

X
- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the change in unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 217 -URI http://asc.fasb.org/extlink&oid=121610041&loc=d3e36027-109320 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
Name: | us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration