Derivatives and Hedging Activities - Fair Value of Derivative Instruments (Parenthetical) (Detail) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Offsetting Liabilities [Line Items]
Long-term debt, less current portion	$ 4,334.9	$ 4,282.5	[1]
Gross position, Other Assets	74.7	63.4
Gross position, Other Liabilities	(58.4)	(68.0)
Other Current Assets [Member]
Offsetting Liabilities [Line Items]
Gross position, Other Assets	42.4	34.4
Impact of master netting agreements	(23.8)	(25.2)
Net amounts recognized on the Condensed Consolidated Balance Sheet	18.6	9.2
Other Non-current Assets [Member]
Offsetting Liabilities [Line Items]
Gross position, Other Assets	32.3	27.1
Impact of master netting agreements		(9.3)
Net amounts recognized on the Condensed Consolidated Balance Sheet	32.3	17.8
Other Current Liabilities [Member]
Offsetting Liabilities [Line Items]
Gross position, Other Liabilities	(36.2)	(48.8)
Impact of master netting agreements	23.8	25.2
Net amounts recognized on the Condensed Consolidated Balance Sheet	(12.4)	(23.6)
Other Non-current Liabilities [Member]
Offsetting Liabilities [Line Items]
Gross position, Other Liabilities	(22.2)	(17.1)
Impact of master netting agreements		9.3
Net amounts recognized on the Condensed Consolidated Balance Sheet	(22.2)	(7.8)
Foreign Currency Forward Contracts [Member]
Offsetting Liabilities [Line Items]
Gross position, Other Assets	33.7	45.6
Gross position, Other Liabilities	(36.2)	$ (68.0)
Foreign Currency Forward Contracts [Member] | Designated as Hedging Instruments [Member]
Offsetting Liabilities [Line Items]
Long-term debt, less current portion	$ 449.9

[1] During the second quarter of 2015, we completed the sale of our North American foam trays and absorbent pads business. During the first quarter of 2015, the assets and liabilities met the criteria of held for sale classification. Accordingly, we reclassified $42 million of assets and $6 million of liabilities as held for sale as of December 31, 2014. Refer to Note 3, “Divestitures and Acquisitions” of the notes to condensed consolidated financial statements for further details.