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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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Goodwill and Other Identifiable Intangible Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Amortization and Impairment
Accumulated goodwill impairment losses	$ 200.5	$ 200.5	$ 200.5
Amortization		114.0us-gaap_AmortizationOfIntangibleAssets	134.1us-gaap_AmortizationOfIntangibleAssets	74.9us-gaap_AmortizationOfIntangibleAssets
Impairment charges, related to trade names	11.0	0	11.0	60.7
Process Technologies
Amortization and Impairment
Impairment charges, related to trade names				23.2
Flow Technologies
Amortization and Impairment
Impairment charges, related to trade names				25.9
Technical Solutions
Amortization and Impairment
Impairment charges, related to trade names			$ 11.0	$ 11.6