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Goodwill and Indefinite-Lived Intangibles (Changes in the Carrying Amount of Goodwill and Indefinite-Lived Intangibles) (Details) - USD ($) $ in Millions | 8 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 10, 2016 | Sep. 30, 2017
Goodwill [Roll Forward] |  |
Goodwill, Beginning balance | $ 429.1 | $ 424.3
Foreign currency translation effects | 0.5 | 5.6
Goodwill, Ending balance | 429.6 | 429.9
Indefinite-lived Intangible Assets [Roll Forward] |  |
Indefinite-lived Intangibles, Beginning balance | 685.4 | 678.5
Indefinite-lived Intangible purchase of intangibles | 0.2 |
Indefinite-lived Intangible assets, sale of intangibles |  | (5.4)
Indefinite-lived Intangibles, Ending balance | 685.6 | 673.1
Goodwill and Indefinite-lived Intangible Assets [Roll Forward] |  |
Goodwill and Indefinite-lived Intangibles, Beginning balance | 1,114.5 | 1,102.8
Goodwill and other intangibles Purchase of Intangibles | 0.2 |
Goodwill and intangible assets, sale of intangibles |  | (5.4)
Goodwill and Indefinite-lived Intangibles, Foreign currency translation effects | 0.5 | 5.6
Goodwill and Indefinite-lived Intangibles, Ending balance | $ 1,115.2 | $ 1,103.0

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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -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 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits 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 (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount of divestiture of an asset lacking physical substance and having a projected indefinite period of benefit to fair value. Excludes financial assets and goodwill. + References No definition available. + Details
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