Segment Information- Reporting Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Net Income (Loss) Attributable to Parent	$ 141,825	$ 186,098	$ 332,396	$ 209,510	$ 169,294	$ 231,844	$ 213,959	$ 160,138	$ 869,829	$ 775,235	$ 1,003,129
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	1,694,600	1,787,582	1,758,628	1,715,501	1,977,947	2,009,575	1,962,636	1,802,570	6,956,311	7,752,728	7,155,096
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Interest expense, net									127,257	127,179	120,654
Earnings from continuing operations before provision for income taxes and discontinued operations									800,610	1,094,207	1,045,986
Provision for income taxes									204,729	316,067	248,459
Earnings from continuing operations	136,574	$ 186,483	$ 155,634	$ 117,190	171,835	$ 225,683	$ 210,581	$ 170,041	$ 595,881	$ 778,140	$ 797,527
Operating Margins [Abstract]
Operating margins (pre-tax) (in hundredths)									14.90%	17.30%	18.20%
Earnings from continuing operations (in hundredths)									8.60%	10.00%	11.10%
Depreciation and Amortization [Abstract]
Depreciation and Amortization									$ 327,089	$ 307,188	$ 278,033
Capital Expenditures [Abstract]
Capital Expenditures									154,251	166,033	141,694
Total Assets [Abstract]
Assets of continuing operations	8,619,763				8,703,120				8,619,763	8,703,120
Assets of discontinued operations	0				327,171				0	327,171
Total assets	8,619,763				9,030,291				8,619,763	9,030,291
Note receivable from buyer											16,250
Energy Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue									1,483,680	2,017,239	1,853,853
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings from continuing operations before provision for income taxes and discontinued operations									$ 173,190	$ 461,815	$ 459,649
Operating Margins [Abstract]
Operating margins (pre-tax) (in hundredths)									11.70%	22.90%	24.80%
Depreciation and Amortization [Abstract]
Depreciation and Amortization									$ 141,779	$ 111,956	$ 99,075
Capital Expenditures [Abstract]
Capital Expenditures									33,692	66,998	60,756
Total Assets [Abstract]
Assets of continuing operations	2,369,600				2,640,731				2,369,600	2,640,731
Engineered Systems Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue									2,342,913	2,385,965	2,177,970
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings from continuing operations before provision for income taxes and discontinued operations									$ 376,961	$ 386,998	$ 347,497
Operating Margins [Abstract]
Operating margins (pre-tax) (in hundredths)									16.10%	16.20%	16.00%
Depreciation and Amortization [Abstract]
Depreciation and Amortization									$ 59,914	$ 61,946	$ 59,058
Capital Expenditures [Abstract]
Capital Expenditures									37,109	29,749	29,145
Total Assets [Abstract]
Assets of continuing operations	2,741,594				2,346,148				2,741,594	2,346,148
Fluids Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue									1,399,273	1,430,566	1,236,838
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings from continuing operations before provision for income taxes and discontinued operations									$ 262,117	$ 251,639	$ 224,523
Operating Margins [Abstract]
Operating margins (pre-tax) (in hundredths)									18.70%	17.60%	18.20%
Depreciation and Amortization [Abstract]
Depreciation and Amortization									$ 56,078	$ 60,903	$ 48,812
Capital Expenditures [Abstract]
Capital Expenditures									45,605	34,319	21,868
Total Assets [Abstract]
Assets of continuing operations	1,529,333				1,421,717				1,529,333	1,421,717
Refrigeration and Food Equipment Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue									1,731,430	1,921,189	1,887,840
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings from continuing operations before provision for income taxes and discontinued operations									$ 221,299	$ 238,734	$ 267,307
Operating Margins [Abstract]
Operating margins (pre-tax) (in hundredths)									12.80%	12.40%	14.20%
Depreciation and Amortization [Abstract]
Depreciation and Amortization									$ 66,074	$ 68,701	$ 67,228
Capital Expenditures [Abstract]
Capital Expenditures									33,511	33,510	27,173
Total Assets [Abstract]
Assets of continuing operations	1,482,315				1,478,433				1,482,315	1,478,433
Corporate, Non-Segment [Member]
Depreciation and Amortization [Abstract]
Depreciation and Amortization									3,244	3,682	3,860
Capital Expenditures [Abstract]
Capital Expenditures									4,334	1,457	2,752
Total Assets [Abstract]
Assets of continuing operations	496,921				816,091				496,921	816,091
Intersegment Elimination [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue									(985)	(2,231)	(1,405)
Total segments [Member]
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings from continuing operations before provision for income taxes and discontinued operations									1,033,567	1,339,186	1,298,976
Corporate expense / other [Member]
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings from continuing operations before provision for income taxes and discontinued operations									105,700	117,800	$ 132,336
U.S. Pension Plan, Defined Benefit [Member]
Total Assets [Abstract]
Noncurrent pension asset	$ 25,150				$ 25,800				$ 25,150	$ 25,800