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Basis of Presentation Basis of Presentation (Tables) | 9 Months Ended
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Sep. 30, 2019
Accounting Changes and Error Corrections [Abstract] |
Schedule of Changes for Adoption of New Accounting Pronouncements [Table Text Block] | The following table illustrates the adjustments made upon adoption of Topic 842 and the corresponding line items affected on the Company’s condensed consolidated balance sheets (in millions):
| January 1, 2019 Topic 842 Adoption Adjustments
| Increase due to existing operating and finance leases |  | Decrease due to build-to-suit reassessment |  | Decrease due to capital lease reassessment |  | Total Increase/(Decrease)
Assets |  |  |  |  |  |  |
Electric utility plant, net | $ | 2 |  |  | $ | (131 | ) |  | $ | (49 | ) |  | $ | (178 | )
Other noncurrent assets | 42 |  |  | — |  |  | — |  |  | 42 |
Liabilities |  |  |  |  |  |  |
Accrued expenses and other current liabilities | 5 |  |  | — |  |  | (2 | ) |  | 3 |
Other noncurrent liabilities | 39 |  |  | (131 | ) |  | (47 | ) |  | (139 | )

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- Definition Tabular disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=116846552&loc=d3e765-108305 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.10-01.(b)(6)) -URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=116846552&loc=d3e725-108305 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794 + Details
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