v3.20.2

Changes in accumulated other comprehensive loss by component (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2020
Changes in accumulated other comprehensive loss by component |
Schedule of changes in accumulated other comprehensive (loss) income | The changes in accumulated other comprehensive (loss) income by component were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, | ​ | Nine Months Ended September 30,
​ | ​ | 2020 | ​ | 2019 | ​ | 2020 |  | 2019
Foreign currency translation |  | ​ |  |  | ​ |  |  | ​ |  | ​ | ​ |
Balance at beginning of period | ​ | $ | (146.9) | ​ | $ | (141.5) | ​ | $ | (140.6) | ​ | $ | (146.4)
Other comprehensive income (loss): | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Foreign currency translation adjustments(1) | ​ |  | 2.5 | ​ |  | (1.6) | ​ |  | (3.8) | ​ |  | 3.3
Balance at end of period | ​ | $ | (144.4) | ​ | $ | (143.1) | ​ | $ | (144.4) | ​ | $ | (143.1)
Pension | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance at beginning and end of period (2) | ​ | $ | (1.7) | ​ | $ | (1.4) | ​ | $ | (1.7) | ​ | $ | (1.4)
Cash flow hedges | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance at beginning of period | ​ | $ | 1.3 | ​ | $ | 1.4 | ​ | $ | 1.6 | ​ | $ | 1.6
Other comprehensive (loss) income: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net change from periodic revaluations | ​ |  | — | ​ |  | — | ​ |  | (0.7) | ​ |  | (0.4)
Tax benefit | ​ |  | — | ​ |  | — | ​ |  | 0.2 | ​ |  | —
Total other comprehensive (loss) income before reclassifications, net of tax | ​ |  | — | ​ |  | — | ​ |  | (0.5) | ​ |  | (0.4)
Net amount reclassified to earnings: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest rate swaps(3) | ​ |  | 0.2 | ​ | ​ | — | ​ | ​ | 0.4 | ​ | ​ | 0.2
Tax expense | ​ |  | (0.1) | ​ | ​ | — | ​ | ​ | (0.1) | ​ | ​ | —
Total amount reclassified from accumulated other comprehensive income, net of tax | ​ |  | 0.1 | ​ |  | — | ​ |  | 0.3 | ​ |  | 0.2
Total other comprehensive loss | ​ |  | 0.1 | ​ |  | — | ​ |  | (0.2) | ​ |  | (0.2)
Balance at end of period | ​ | $ | 1.4 | ​ | $ | 1.4 | ​ | $ | 1.4 | ​ | $ | 1.4
(1) | In all periods presented, there were no tax impacts related to rate changes and no amounts were reclassified to earnings.
(2) | Quarterly activity was immaterial.
(3) | This amount was included in interest expense, net on the accompanying condensed consolidated statements of operations.

X
- 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
Name: | us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
Name: | us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration