Restructuring and Asset Impairments - Additional Information (Detail) (USD $)	3 Months Ended					12 Months Ended										6 Months Ended	12 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Core Technologies	Dec. 31, 2012 Core Technologies	Dec. 31, 2013 In-Process Research And Development	Dec. 31, 2013 Equipment And Inventory	Dec. 31, 2012 Assets Not Related To Operations	Dec. 31, 2013 2012 Restructuring Plan	Dec. 31, 2012 2012 Restructuring Plan	Dec. 31, 2011 2011 Restructuring Plan	Dec. 31, 2012 2011 Restructuring Plan	Dec. 31, 2011 2011 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total cost of restructuring															$ 19,200,000
Employee separation and other costs related to one time employee termination benefits, after tax															13,000,000
Reversal of restructuring costs		1,400,000			1,600,000									2,100,000			1,800,000	1,600,000
Severance costs																12,000,000
Severance costs after tax																8,100,000
Asset impairments, total	3,400,000	3,200,000	5,700,000	13,200,000	9,000,000	12,300,000	22,200,000	0
Asset impairments, total, net of tax						9,500,000	13,800,000
Impairment of Intangible Assets, Finite Lived									6,400,000	13,200,000
Impairment of Intangible Assets, Finite Lived, Net of Tax									4,900,000	8,000,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)											3,400,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill), Net of Tax											2,200,000
Asset impairment charges related to assets not related to operations, pre tax												2,500,000	9,000,000
Asset impairment charges related to assets not related to operations, after tax												$ 2,400,000	$ 5,800,000