Income taxes (Details) $ in Thousands	3 Months Ended
Mar. 31, 2020 USD ($)
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 81,717
Unrecognized tax benefits that would impact effective tax rate if recognized	81,717
Accrued interest related to the gross unrecognized tax benefits excluded from the unrecognized tax benefits	14,425
Decrease in unrecognized tax benefits resulting from settlements with taxing authorities	74,057
Decrease in unrecognized tax benefits that is reasonably possible (up to)	$ 40,000

Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of interest expense accrued for an underpayment of income taxes.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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