Acquisition and Disposition (Details)
 3 Months Ended 3 Months Ended 0 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 3 Months Ended 3 Months Ended
Mar. 31, 2015
USD ($)
Mar. 31, 2014
USD ($)
Dec. 31, 2014
USD ($)
Mar. 31, 2014
Naval OY
USD ($)
Jan. 07, 2015
SIHI Group B.V.
USD ($)
Jan. 07, 2015
SIHI Group B.V.
EUR (€)
Mar. 31, 2015
SIHI Group B.V.
USD ($)
Nov. 30, 2014
SIHI Group B.V.
EUR (€)
Jan. 07, 2015
SIHI Group B.V.
USD ($)
Jan. 07, 2015
SIHI Group B.V.
Trademarks
USD ($)
Mar. 31, 2015
SIHI Group B.V.
Existing customer relationships
Jan. 07, 2015
SIHI Group B.V.
Existing customer relationships
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Mar. 31, 2015
SIHI Group B.V.
Backlog
Jan. 07, 2015
SIHI Group B.V.
Backlog
USD ($)
Mar. 31, 2015
SIHI Group B.V.
Engineering drawings and other
Jan. 07, 2015
SIHI Group B.V.
Engineering drawings and other
USD ($)
Schedule of Equity Method Investments [Line Items]                                
Business Acquisition, Purchase Price, Net of Cash Acquired             $ 23,400,000                  
Percentage acquired                 100.00%              
Business Combination, Consideration Transferred         341,500,000 286,700,000                    
Business Combination, Cash Consideration Transferred         110,000,000                      
Business Combination, Consideration Transferred from borrowed sources         255,000,000                      
Accounts receivable                 56,200,000              
Inventories                 74,000,000              
Prepaid expenses and other                 17,200,000              
Total current assets                 147,400,000              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles                 78,600,000 20,900,000   45,300,000   8,500,000   3,900,000
Property, plant and equipment                 87,500,000              
Long-term deferred tax asset                 10,700,000              
Investments in affiliates                 11,600,000              
Total assets                 335,800,000              
Current liabilities                 (87,000,000)              
Noncurrent liabilities                 (101,700,000)              
Net assets                 147,100,000              
Goodwill 1,214,919,000   1,067,255,000           194,400,000              
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life             9 years       10 years   1 year   10 years  
Business Acquisition, Sales Generated by Acquired Entity             67,000,000                  
Business Acquisition Impact On Operating Income             24,400,000                  
Business Acquisition Related Costs             5,000,000                  
Purchase price, net of cash acquired of $23.4 million                 341,500,000              
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period               270,000,000                
Proceeds from sale of business, net of cash divested 0 46,805,000   46,800,000                        
Gain (Loss) on Disposition of Business 0 13,403,000   13,400,000                        
Disposal Group, Including Discontinued Operation, Revenue       $ 8,200,000