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Redeemable Noncontrolling Interests - Additional Information (Details) - USD ($)
$ in Millions
Aug. 08, 2018
Jun. 22, 2018
Feb. 01, 2017
TM4 [Member]      
Business Acquisition [Line Items]      
Initial fair value of redeemable noncontrolling interests of acquired businesses   $ 102  
BFP and BPT [Member]      
Business Acquisition [Line Items]      
Payments to acquire redeemable noncontrolling interests $ 43    
Received in settlement of all pending and future claims $ 10    
Hydro-Quebec [Member] | TM4 [Member]      
Business Acquisition [Line Items]      
Ownership percentage by noncontrolling owners   45.00%  
Brevini Group S.p.A. [Member] | BFP and BPT [Member]      
Business Acquisition [Line Items]      
Ownership percentage by noncontrolling owners     20.00%