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Intangible Assets (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($)
Intangible Assets |
Intangible Assets, Gross | $ 226
Intangible Assets, Accumulated Amortization | 146
Intangible Assets, Net | 80
Amortization Expense |
Actual, 2019 | 8
Estimated, 2020 | 7
Estimated, 2021 | 5
Estimated, 2022 | 5
Estimated, 2023 | 5
Estimated, 2024 | 5
Estimated, Thereafter | 53
NUG contracts |
Intangible Assets |
Intangible Assets, Gross | 124
Intangible Assets, Accumulated Amortization | 46
Intangible Assets, Net | 78
Amortization Expense |
Actual, 2019 | 5
Estimated, 2020 | 5
Estimated, 2021 | 5
Estimated, 2022 | 5
Estimated, 2023 | 5
Estimated, 2024 | 5
Estimated, Thereafter | 53
Coal contracts |
Intangible Assets |
Intangible Assets, Gross | 102
Intangible Assets, Accumulated Amortization | 100
Intangible Assets, Net | 2
Amortization Expense |
Actual, 2019 | 3
Estimated, 2020 | 2
Estimated, 2021 | 0
Estimated, 2022 | 0
Estimated, 2023 | 0
Estimated, 2024 | 0
Estimated, Thereafter | $ 0

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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