Acquisitions (Details) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($) $ / shares	Jun. 30, 2015 USD ($) $ / shares	Jun. 30, 2016 USD ($) $ / shares	Jun. 30, 2015 USD ($) $ / shares
Business Acquisition [Line Items]
Number of Businesses Acquired			3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	$ 475,236	$ 567,843	$ 475,236	$ 567,843
Goodwill and intangibles acquired	493,642		493,642
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]
Current assets, net of cash acquired	101,243		101,243
Property, Plant, and Equipment	31,240		31,240
Goodwill	301,577		301,577
Intangibles assets	192,065		192,065
Other Non-current Assets	5,564		5,564
Current Liabilities	(105,699)		(105,699)
Non-current Liabilities	(50,754)		(50,754)
Revenue from continuing operations [Abstract]
As reported	1,686,345	1,758,628	3,308,618	3,474,129
Pro forma	1,690,286	1,884,970	3,324,674	3,725,932
Net earnings from continuing operations [Abstract]
As reported	118,290	155,634	217,646	272,824
Pro forma	$ 120,556	$ 165,251	$ 229,031	$ 286,930
Basic earnings per share from continuing operations [Abstract]
As reported (in dollars per share) | $ / shares	$ 0.76	$ 0.98	$ 1.40	$ 1.70
Pro forma (in dollars per share) | $ / shares	0.78	1.04	1.48	1.79
Diluted earnings per share from continuing operations [Abstract]
As reported (in dollars per share) | $ / shares	0.76	0.97	1.39	1.69
Pro forma (in dollars per share) | $ / shares	$ 0.77	$ 1.03	$ 1.46	$ 1.77
Customer Relationships [Member]
Business Acquisition [Line Items]
Acquired finite-lived intangible asset, amount			$ 101,898
Acquired finite-lived intangible assets, weighted average useful life			10 years
Trademarks [Member]
Business Acquisition [Line Items]
Acquired finite-lived intangible asset, amount			$ 24,866
Acquired finite-lived intangible assets, weighted average useful life			15 years
Other Intangible Assets [Member]
Business Acquisition [Line Items]
Acquired finite-lived intangible asset, amount			$ 65,301
Acquired finite-lived intangible assets, weighted average useful life			10 years