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Intangibles - Intangible Assets Other Than Goodwill and Trade Names (Detail) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of accumulated amortization	$ 3,592.5	$ 547.1
Intellectual property, patents, non-compete and other intangibles
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of accumulated amortization	1,162.0	13.3
Intangible assets, accumulated amortization	100.2	40.1
Backlog
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of accumulated amortization	1,396.6	2.0
Intangible assets, accumulated amortization	87.6	2.0
Customer relationships
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of accumulated amortization	1,033.9	531.8
Intangible assets, accumulated amortization	$ 195.2	$ 158.5

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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