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INCOME TAXES - Schedule of Effective Income Tax Reconciliation (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax Disclosure [Abstract] |  |  |
Expected Canadian statutory rate | 26.90% | 26.90% | 26.90%
Loss before benefit from income taxes | $ (1,024) | $ (934) | $ (1,837)
Benefit from income taxes |  |  |
Expected benefit from income taxes at Canadian statutory rate | 275 | 251 | 494
Non-deductible amount of share-based compensation | (9) | (9) | (7)
Adjustments to tax attributes | (59) | 26 | (99)
Change in valuation allowance related to foreign tax credits and NOLs | 28 | 62 | 21
Change in valuation allowance on Canadian deferred tax assets and tax rate changes | 40 | 687 | (142)
Change in uncertain tax positions | 112 | (163) | (350)
Foreign tax rate differences | (198) | (128) | 186
Non-deductible portion of Goodwill impairments | (99) | 0 | 0
Tax benefit on intra-entity transfers | 0 | (338) | 0
Other | (3) | (13) | (49)
(Provision for) benefit from income taxes | $ 87 | $ 375 | $ 54

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- Definition The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to change in valuation allowance related to operating losses. + References No definition available. + Details
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- Definition Represents the portion of the difference between total income tax expense (benefit) as reported in the income statement and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to deferred intercompany profit. + References No definition available. + Details
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- Definition The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to uncertain tax positions. + References No definition available. + Details
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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- Definition Amount of current and deferred foreign income tax expense (benefit) attributable to income (loss) from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(1)(Note 1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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