Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) segments	Jun. 30, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segments			4
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	$ 1,758,628	$ 1,962,636	$ 3,474,129	$ 3,765,206
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Interest expense, net	31,988	31,961	64,025	64,616
Earnings before provision for income taxes and discontinued operations	221,141	303,547	385,816	545,157
Provision for income taxes	65,507	92,966	112,992	164,535
Earnings from continuing operations	155,634	210,581	272,824	380,622
Energy Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	366,044	481,016	796,467	959,789
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes and discontinued operations	40,909	114,991	93,214	233,959
Engineered Systems Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	593,091	613,821	1,166,287	1,181,495
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes and discontinued operations	96,702	101,766	184,851	184,993
Fluids Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	351,511	346,275	691,747	691,284
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes and discontinued operations	70,168	63,112	124,802	121,054
Refrigeration and Food Equipment Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	448,115	522,357	820,212	933,850
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes and discontinued operations	65,732	84,926	101,882	129,788
Intersegment Elimination [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	(133)	(833)	(584)	(1,212)
Total segments [Member]
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes and discontinued operations	273,511	364,795	504,749	669,794
Corporate expense / other [Member]
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes and discontinued operations	$ (20,382)	$ (29,287)	$ (54,908)	$ (60,021)