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Acquisitions And Divestitures Acquisition of Control-Tec (Details) - USD ($)
Nov. 30, 2015
Jun. 30, 2016
Dec. 31, 2015
Business Acquisition [Line Items]      
Goodwill   $ 1,571,000,000 $ 1,539,000,000
Control-Tec LLC      
Business Acquisition [Line Items]      
Business Acquisition, Percentage of Equity Interests Acquired 100.00%    
Purchase price, cash consideration $ 104,000,000    
Contingent Consideration Arrangements, Range of Outcomes, Value, High 40,000,000    
Contingent Consideration Arrangements, Range of Outcomes, Value, Low $ 0    
Contingent Consideration Period 3 years    
Contingent consideration liability $ 20,000,000    
Total purchase price 124,000,000    
Intangible assets 66,000,000    
Other assets purchased and liabilities assumed, net 4,000,000    
Identifiable net assets acquired 70,000,000    
Goodwill 54,000,000    
Total purchase price allocation $ 124,000,000    
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 10 years