Equity method and other investments - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Noncontrolling Interest [Line Items]
Equity investment income (loss)	$ 17,843	$ 2,708
Valuation Adjustment	$ 0	$ 0
Parent Company
Noncontrolling Interest [Line Items]
Ownership interest percentage by parent	75.00%
Parent Company \| Minimum
Noncontrolling Interest [Line Items]
Ownership interest percentage by parent	30.00%
Parent Company \| Maximum
Noncontrolling Interest [Line Items]
Ownership interest percentage by parent	50.00%
APAC JV - Deconsolidated Noncontrolling Entity
Noncontrolling Interest [Line Items]
Current economic interest in the APAC JV, Owned by Noncontrolling Investors	25.00%

Valuation Adjustment on equity method investments and other.

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- Definition

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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