Changes in Accumulated Other Comprehensive Income (Loss) by Component (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			$ (20,900,000)		$ (81,200,000)
Other comprehensive income (loss) before reclassifications			(13,000,000)		1,600,000
Tax (provision) benefit related to other comprehensive income (loss) before reclassifications			(900,000)	[1]	(400,000)	[1]
Other comprehensive income (loss) before reclassifications, net of taxes			(13,900,000)		1,200,000
Amounts reclassified from accumulated other comprehensive income (loss)			8,200,000		9,700,000
Tax provision (benefit) related to amounts reclassified from accumulated other comprehensive income (loss)			(2,700,000)		(3,400,000)
Reclassifications, net of tax			5,500,000		6,300,000
Other comprehensive income (loss)	(16,700,000)	9,000,000	(8,400,000)		7,500,000
Ending balance	(29,300,000)	(73,700,000)	(29,300,000)		(73,700,000)
Derivative Instruments Designated as Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			0		(700,000)
Other comprehensive income (loss) before reclassifications			1,600,000		2,300,000
Tax (provision) benefit related to other comprehensive income (loss) before reclassifications			(900,000)	[1]	(400,000)	[1]
Other comprehensive income (loss) before reclassifications, net of taxes			700,000		1,900,000
Amounts reclassified from accumulated other comprehensive income (loss)			700,000	[2]	(600,000)	[2]
Tax provision (benefit) related to amounts reclassified from accumulated other comprehensive income (loss)			(100,000)		300,000
Reclassifications, net of tax			600,000		(300,000)
Other comprehensive income (loss)			1,300,000		1,600,000
Ending balance	1,300,000	900,000	1,300,000		900,000
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			47,300,000		32,600,000
Other comprehensive income (loss) before reclassifications			(14,600,000)		(700,000)
Tax (provision) benefit related to other comprehensive income (loss) before reclassifications			0	[1]	0	[1]
Other comprehensive income (loss) before reclassifications, net of taxes			(14,600,000)		(700,000)
Amounts reclassified from accumulated other comprehensive income (loss)			0		0
Tax provision (benefit) related to amounts reclassified from accumulated other comprehensive income (loss)			0		0
Reclassifications, net of tax			0		0
Other comprehensive income (loss)			(14,600,000)		(700,000)
Ending balance	32,700,000	31,900,000	32,700,000		31,900,000
Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(68,200,000)		(113,100,000)
Other comprehensive income (loss) before reclassifications			0		0
Tax (provision) benefit related to other comprehensive income (loss) before reclassifications			0	[1]	0	[1]
Other comprehensive income (loss) before reclassifications, net of taxes			0		0
Amounts reclassified from accumulated other comprehensive income (loss)			7,500,000	[3]	10,300,000	[3]
Tax provision (benefit) related to amounts reclassified from accumulated other comprehensive income (loss)			(2,600,000)		(3,700,000)
Reclassifications, net of tax			4,900,000		6,600,000
Other comprehensive income (loss)			4,900,000		6,600,000
Ending balance	$ (63,300,000)	$ (106,500,000)	$ (63,300,000)		$ (106,500,000)

[1] Income taxes are not provided for foreign currency translation adjustment.

[2] See Note 4 of the notes to condensed consolidated financial statements.

[3] These components are included in the computation of net periodic pension cost. See Note 8 of the notes to condensed consolidated financial statements.