Mergers, Acquisitions and Dispositions Merger Transaction Table (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions |
12 Months Ended | ||||
---|---|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Mar. 23, 2016 |
Dec. 31, 2013 |
|
Business Acquisition, Share Price | $ 27.25 | ||||
Investments | $ 629 | $ 639 | |||
Shares, Issued | 958,778 | 954,668 | 894,568 | 892,034 | |
Payments to Acquire Businesses, Gross | $ 6,934 | $ 40 | $ 386 | ||
Pepco Holdings LLC [Member] | Predecessor [Member] | |||||
Investments | 80 | ||||
Goodwill, Other Increase (Decrease) | $ (6) | ||||
Pepco Holdings LLC [Member] | Successor [Member] | |||||
Investments | 133 | ||||
Pepco Holdings LLC [Member] | Common Stock [Member] | |||||
Payments to Acquire Businesses, Gross | $ 6,933 |