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Goodwill and Other Intangible Assets (2019 Acquisitions) (Narrative) (Details)
$ in Millions
3 Months Ended
Mar. 31, 2019
USD ($)
yr
acquisition
Business Combinations [Line Items]  
Business combinations, number of acquisitions | acquisition 2
Business combinations, contingent consideration liabilities, range of potential undiscounted earn-out liabilities, low (in dollars) $ 41
Business combinations, contingent consideration liabilities, range of potential undiscounted earn-out liabilities, high (in dollars) $ 196
Business combinations, contingent consideration liabilities, range of potential earn-out liabilities, maximum unlimited there is no maximum payment amount
Company Specializing in Water Management and Pipeline Systems, Oil and Gas Market [Member]  
Business Combinations [Line Items]  
Business combinations, percentage of interests acquired 100.00%
2019 Acquisitions [Member]  
Business Combinations [Line Items]  
Business combinations, cash paid (in dollars) $ 116
Business combinations, earn-out liabilities (in dollars) 15
Business combinations, contingent consideration liabilities, range of potential undiscounted earn-out liabilities, high (in dollars) $ 39
Business combinations, contingent consideration liabilities, range of potential earn-out liabilities, maximum unlimited there is no maximum payment amount
2019 Acquisitions [Member] | Expected Term [Member] | Minimum [Member]  
Business Combinations [Line Items]  
Business combinations, contingent consideration, earn-out period (in years) | yr 3
2019 Acquisitions [Member] | Expected Term [Member] | Maximum [Member]  
Business Combinations [Line Items]  
Business combinations, contingent consideration, earn-out period (in years) | yr 5