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Acquisitions, Discontinued Operations and Dispositions - Acquisitions (Details) customer in Thousands, $ in Millions | Aug. 01, 2019 USD ($) customer state | Jun. 01, 2018 USD ($) customer state
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Stream Energy Acquisition |  |
Business Acquisition [Line Items] |  |
States in which entity operates | state | 9 |
Cash paid to acquire business | $ | $ 329 |
Working capital and other adjustment | $ | $ 29 |
Increase in retail portfolio by RCE's acquired | customer | 600 |
Customers acquired | customer | 450 |
XOOM Energy, LLC |  |
Business Acquisition [Line Items] |  |
States in which entity operates | state |  | 19
Cash paid to acquire business | $ |  | $ 213
Working capital and other adjustment | $ |  | $ 48
Increase in retail portfolio by RCE's acquired | customer |  | 395
Customers acquired | customer |  | 300

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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
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