Segment Information- Reporting Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Interest expense									$ 136,401	$ 131,676	$ 131,689
Interest income									6,759	4,419	4,510
Net Income (Loss) Attributable to Parent	$ 161,162	$ 130,084	$ 118,290	$ 99,356	$ 141,825	$ 186,098	$ 332,396	$ 209,510	508,892	869,829	775,235
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	1,777,961	1,707,763	1,686,345	1,622,273	1,694,600	1,787,582	1,758,628	1,715,501	6,794,342	6,956,311	7,752,728
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings from continuing operations before provision for income taxes and discontinued operations									689,332	800,610	1,094,207
Provision for income taxes									180,440	204,729	316,067
Earnings from continuing operations	161,162	$ 130,084	$ 118,290	$ 99,356	136,574	$ 186,483	$ 155,634	$ 117,190	$ 508,892	$ 595,881	$ 778,140
Operating Margins [Abstract]
Segment Margins									13.70%	14.90%	17.30%
Earnings from continuing operations (in hundredths)									7.50%	8.60%	10.00%
Depreciation and Amortization [Abstract]
Depreciation and Amortization									$ 360,739	$ 327,089	$ 307,188
Capital Expenditures [Abstract]
Capital Expenditures									165,205	154,251	166,033
Total Assets [Abstract]
Total assets	10,115,991				8,606,076				10,115,991	8,606,076
Energy Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue									1,108,438	1,483,680	2,017,239
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings from continuing operations before provision for income taxes and discontinued operations									$ 55,336	$ 173,190	$ 461,815
Operating Margins [Abstract]
Segment Margins									5.00%	11.70%	22.90%
Depreciation and Amortization [Abstract]
Depreciation and Amortization									$ 131,420	$ 141,779	$ 111,956
Capital Expenditures [Abstract]
Capital Expenditures									32,938	33,692	66,998
Total Assets [Abstract]
Assets of continuing operations	2,209,230				2,369,600				2,209,230	2,369,600
Engineered Systems Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue									2,366,283	2,342,913	2,385,965
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings from continuing operations before provision for income taxes and discontinued operations									$ 391,829	$ 376,961	$ 386,998
Operating Margins [Abstract]
Segment Margins									16.60%	16.10%	16.20%
Depreciation and Amortization [Abstract]
Depreciation and Amortization									$ 73,947	$ 59,914	$ 61,946
Capital Expenditures [Abstract]
Capital Expenditures									31,121	37,109	29,749
Total Assets [Abstract]
Assets of continuing operations	3,002,629				2,741,594				3,002,629	2,741,594
Fluids Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue									1,700,574	1,399,273	1,430,566
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings from continuing operations before provision for income taxes and discontinued operations									$ 200,921	$ 262,117	$ 251,639
Operating Margins [Abstract]
Segment Margins									11.80%	18.70%	17.60%
Depreciation and Amortization [Abstract]
Depreciation and Amortization									$ 85,224	$ 56,078	$ 60,903
Capital Expenditures [Abstract]
Capital Expenditures									62,368	45,605	34,319
Total Assets [Abstract]
Assets of continuing operations	3,134,838				1,529,333				3,134,838	1,529,333
Refrigeration and Food Equipment Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue									1,620,339	1,731,430	1,921,189
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings from continuing operations before provision for income taxes and discontinued operations									$ 283,628	$ 221,299	$ 238,734
Operating Margins [Abstract]
Segment Margins									17.50%	12.80%	12.40%
Depreciation and Amortization [Abstract]
Depreciation and Amortization									$ 65,017	$ 66,074	$ 68,701
Capital Expenditures [Abstract]
Capital Expenditures									23,651	33,511	33,510
Total Assets [Abstract]
Assets of continuing operations	1,324,037				1,482,315				1,324,037	1,482,315
Corporate, Non-Segment [Member]
Depreciation and Amortization [Abstract]
Depreciation and Amortization									5,131	3,244	3,682
Capital Expenditures [Abstract]
Capital Expenditures									15,127	4,334	1,457
Total Assets [Abstract]
Assets of continuing operations	$ 445,257				$ 483,234				445,257	483,234
Intersegment Elimination [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue									(1,292)	(985)	(2,231)
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									931,714	1,033,567	1,339,186
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									$ 112,740	$ 105,700	$ 117,800