Goodwill and Other Intangibles, Net Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 191,017		$ 191,017		$ 161,954
Accumulated Amortization	50,725		50,725		43,404
Net	140,292		140,292		118,550
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]
Trademarks with indefinite lives	8,020		8,020		8,020
Amortization expense	4,005	$ 3,383	7,352	$ 6,877
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	133,152		133,152		113,952
Accumulated Amortization	34,947		34,947		29,726
Net	98,205		98,205		84,226
Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	34,154		34,154		28,803
Accumulated Amortization	6,960		6,960		5,856
Net	27,194		27,194		22,947
Patents and technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	16,907		16,907		16,773
Accumulated Amortization	6,715		6,715		6,023
Net	10,192		10,192		10,750
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,804		6,804		2,426
Accumulated Amortization	2,103		2,103		1,799
Net	4,701		4,701		$ 627
ITW | Other
Acquired Finite-Lived Intangible Assets [Line Items]
Net	$ 4,400		$ 4,400