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Goodwill and Other Intangible Assets - Goodwill by Reportable Business Segment (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Goodwill [Roll Forward] |  |
Beginning balance | $ 732.3 | $ 723.0
Goodwill resulting from acquisition | 26.7 | 7.8
Foreign currency translation adjustments and other | 7.3 | 1.5
Ending balance | 766.3 | 732.3
North America Segment |  |
Goodwill [Roll Forward] |  |
Beginning balance | 581.9 | 576.7
Goodwill resulting from acquisition | 26.7 | 2.4
Foreign currency translation adjustments and other | 1.7 | 2.8
Ending balance | 610.3 | 581.9
International Segment |  |
Goodwill [Roll Forward] |  |
Beginning balance | 150.4 | 146.3
Goodwill resulting from acquisition | 0.0 | 5.4
Foreign currency translation adjustments and other | 5.6 | (1.3)
Ending balance | $ 156.0 | $ 150.4

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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