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v3.20.4

Deferred tax assets and liabilities - Impact on current taxes payable (Details) - USD ($) $ in Billions | Dec. 31, 2020 | Dec. 31, 2019
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Income Taxes [Abstract] |  |
Deferred tax assets | $ 0.6 | $ 0.6
Deferred tax liabilities | $ 1.8 | $ 1.8

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- Definition Deferred Tax Assets, Impact On Current Tax Liabilities, After Twelve Months + References No definition available. + Details
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- Definition Deferred Tax Liabilities, Impact On Current Tax Liabilities, After Twelve Months + References No definition available. + Details
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- Definition Income Taxes [Abstract] + References No definition available. + Details
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