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Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | [1] | Sep. 30, 2019 | Sep. 30, 2018 | [1]
Statement of Comprehensive Income [Abstract] |  |  |  |
Reclassification from AOCI to net income, tax |  |  | $ 0 |
Reclassification from AOCI to net income, tax | $ 0 | $ (1) |  | $ 2
Unrealized gains (losses) on foreign currency translation, tax | 0 | 0 | 0 | (1)
Other comprehensive income (loss) related to equity method investee, tax (benefit) expense | 0 | (2) | 0 | (2)
Impact of disposal of Canadian Holdings, tax expense | $ 0 | $ 0 | $ 0 | $ 3
[1] | Prior-period financial information has been retrospectively adjusted to include the adoption of an accounting standards update related to leases.

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- Definition Disposal Group, Not Discontinued Operation, Tax Effect of Gain (Loss) from Disposal + References No definition available. + Details
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- Definition Amount of tax expense (benefit) for reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e640-108580 + Details
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- Definition Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e640-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580 + Details
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