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v3.19.3.a.u2

Deferred tax assets and liabilities - Impact on current taxes payable (Details) - USD ($) $ in Billions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Income Taxes [Abstract] |  |
Deferred tax assets | $ 0.6 | $ 0.3
Deferred tax liabilities | $ 1.8 | $ 1.5

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