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Income Taxes update (Tables) | 9 Months Ended
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Sep. 30, 2020
Income Tax Disclosure [Abstract] |
Summary of Valuation Allowance | A reconciliation of the beginning and ending valuation allowances for the period ended September 30, 2020 was as follows:
(in millions) |  |  |
Balance at beginning of year |  | $ | 2,324 |  |
Additions to valuation allowance charged to income tax expense |  | 673 |  |
Reductions to valuation allowance credited to income tax benefit |  | (145) |  |
Foreign currency translation |  | 4 |  |
Balance at end of period |  | $ | 2,856 |  |

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- Definition Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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