Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for Marsal Acquisition (Details) - USD ($) $ in Thousands	Jul. 04, 2015	Feb. 10, 2015	Jan. 03, 2015
Business Acquisition [Line Items]
Goodwill	$ 833,382		$ 808,491
Marsal [Member]
Business Acquisition [Line Items]
Current assets		$ 455
Property, plant and equipment		196
Goodwill		3,017
Other intangibles		2,027
Current liabilities		(195)
Net assets acquired and liabilities assumed		5,500
as initially reported | Marsal [Member]
Business Acquisition [Line Items]
Current assets		455
Property, plant and equipment		201
Goodwill		3,012
Other intangibles		2,027
Current liabilities		(195)
Net assets acquired and liabilities assumed		5,500
Scenario, Adjustment [Member] | Marsal [Member]
Business Acquisition [Line Items]
Current assets		0
Property, plant and equipment		(5)
Goodwill		5
Other intangibles		0
Current liabilities		0
Net assets acquired and liabilities assumed		$ 0