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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

X

- 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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X

- 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

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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X

- 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

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- Definition

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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.

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- Definition

Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, from an acquisition.

+ References

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Goodwill and other intangibles foreign currency translation effects.

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Goodwill and other intangibles assets acquired

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