Acquisitions (Details) (USD $)	3 Months Ended		1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 31, 2015	Mar. 31, 2015	Feb. 28, 2015
Business Acquisitions Information
Purchased finite-lived intangible assets	$ 52,000,000			$ 52,000,000
Supplemental information:
Cash paid, net of cash acquired	150,000,000	0
Maximum [Member]
Finite Lived Intangible Assets
Intangible assets useful life	16 years
Minimum [Member]
Finite Lived Intangible Assets
Intangible assets useful life	2 years
Weighted Average [Member]
Finite Lived Intangible Assets
Intangible assets useful life	13 years
Static control business
Supplemental information:
Annual sales of static business prior to divestiture			46,000,000
Ivera Medical Corp
Supplemental information:
Annual sales prior to acquisition				30,000,000
Polypore International Inc
Supplemental information:
Annual sales prior to acquisition					208,000,000
Estimated purchase price to acquire business					$ 1,000,000,000