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Accumulated Other Comprehensive Income (Loss) | 12 Months Ended
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Dec. 31, 2020
Equity [Abstract] |
Accumulated Other Comprehensive Income (Loss) | 14. Accumulated Other Comprehensive Income (Loss) The components of accumulated other comprehensive income (loss) were as follows:
|  | Foreign Currency Translation Adjustment |  |  | Unrealized Gain (Loss) from Invested Customer Trust Funds |  |  | Pension Liability Adjustment |  |  | Total |
|  | (Dollars in millions) |
Balance as of December 31, 2018 |  | $ | (207.5 | ) |  | $ | (18.3 | ) |  | $ | (150.1 | ) |  | $ | (375.9 | )
Other comprehensive loss before income taxes and reclassifications |  |  | 29.1 |  |  |  | 37.7 |  |  |  | (0.3 | ) |  |  | 66.5 |
Income tax benefit |  |  | — |  |  |  | (9.6 | ) |  |  | (2.4 | ) |  |  | (12.0 | )
Reclassifications to earnings |  |  | — |  |  |  | — |  |  |  | 10.1 |  |  |  | 10.1 |
Other comprehensive income |  |  | 29.1 |  |  |  | 28.1 |  |  |  | 7.4 |  |  |  | 64.6 |
Cumulative-effect adjustment related to the adoption of ASU 2018-02 |  |  | — |  |  |  | 0.4 |  |  |  | (27.5 | ) |  |  | (27.1 | )
Balance as of December 31, 2019 |  |  | (178.4 | ) |  |  | 10.2 |  |  |  | (170.2 | ) |  |  | (338.4 | )
Other comprehensive loss before income taxes and reclassifications |  |  | 18.7 |  |  |  | 38.4 |  |  |  | 8.0 |  |  |  | 65.1 |
Income tax benefit |  |  | — |  |  |  | (10.2 | ) |  |  | (5.7 | ) |  |  | (15.9 | )
Reclassifications to earnings |  |  | — |  |  |  | — |  |  |  | 13.2 |  |  |  | 13.2 |
Other comprehensive income |  |  | 18.7 |  |  |  | 28.2 |  |  |  | 15.5 |  |  |  | 62.4 |
Balance as of December 31, 2020 |  | $ | (159.7 | ) |  | $ | 38.4 |  |  | $ | (154.7 | ) |  | $ | (276.0 | )

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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