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Intangible Assets - Summary of Changes (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2018 USD ($)
Summary of the changes in the carrying amount of goodwill and other indefinite-lived intangible assets |
Goodwill, Beginning balance | $ 1,660.5
Goodwill, Additions | 65.0
Goodwill, Disposals | (6.7)
Goodwill, Foreign currency translation | (18.1)
Goodwill, Ending balance | 1,700.7
Other indefinite-lived intangible assets, Beginning Balance | 474.0
Other indefinite-lived intangible assets, Additions | 8.9
Other indefinite-lived intangible assets, Disposals | (3.3)
Other indefinite-lived intangible assets, Foreign currency translation | (5.5)
Other indefinite-lived intangible assets, Ending Balance | $ 474.1

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- Definition Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments 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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e961-128460 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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