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Annual report pursuant to Section 13 and 15(d)

Income Taxes - Deferred Taxes (Details)

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Income Taxes - Deferred Taxes (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Components of Deferred Tax Assets and Liabilities [Abstract] Ìý Ìý
Tax losses and capital loss carryforwards $ 314 $ 177
Foreign tax credit carryforwards 154 121
Accrued stock compensation 22 30
Operating lease liability 84 Ìý
Other accrued liabilities 48 65
Other future deductible amounts 186 110
Deferred tax assets 808 503
Valuation allowance (205) (154)
Net deferred tax assets 603 349
Investments 122 55
Intangible assets 856 1,123
Fixed assets 106 Ìý
Discount on exchangeable debentures 1,047 1,067
Other 153 29
Deferred tax liabilities 2,284 2,274
Deferred tax liabilities 1,681 $ 1,925
Valuation Allowance, Deferred Tax Asset, Change in Amount 51 Ìý
Deferred tax assets net operating loss subject to expiration 262 Ìý
Deferred tax assets, net operating loss not subject to expiration 52 Ìý
Operating Loss Carryforwards, Valuation Allowance 126 Ìý
Foreign tax credit carryforward valuation allowance $ 79 Ìý