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Business Acquisitions - Narrative (Details) - USD ($)
6 Months Ended
Feb. 02, 2018
Jun. 30, 2018
Line of Credit | Term Loan Agreement    
Business Acquisition [Line Items]    
Face amount $ 500,000,000  
Senior Notes | Notes 2028 Term    
Business Acquisition [Line Items]    
Interest rate, stated percentage 3.50%  
Face amount $ 450,000,000  
Aclara    
Business Acquisition [Line Items]    
Consideration transferred to acquire business $ 1,100,000,000  
Net sales   $ 254,100,000
Operating loss of acquiree since acquisition   $ 2,600,000