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Acquisition of Duke - Additional Information (Detail)
shares in Thousands, $ in Billions
Oct. 03, 2022
USD ($)
shares
Oct. 03, 2022
USD ($)
shares
Sep. 30, 2022
shares
Dec. 31, 2021
shares
Business Acquisition [Line Items]        
Common stock, shares issued     740,411 739,827
Subsequent Event [Member] | Duke Transaction [Member]        
Business Acquisition [Line Items]        
Business acquisition stock conversion ratio   0.475    
Business acquisition consideration transferred | $ $ 23 $ 23    
Common stock, shares issued 183,000 183,000    
Subsequent Event [Member] | Duke Transaction [Member] | Common Unit [Member]        
Business Acquisition [Line Items]        
Common limited partnership units, shares   2,000