Purchase Price (Details) (ATMI [Member], USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 28, 2014	Apr. 30, 2014
ATMI [Member]
Acquisitions [Line Items]
Payments to acquire business, paid to shareholders	$ 1,099,033
Cash paid in settlement of share based compensation awards	31,001
Payments to Acquire Businesses, Gross	1,130,034
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents		321,094
Total purchase price, net of cash acquired		$ 808,940