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Stockholders’ Equity - Trivago Special Dividend (Details) - trivago - Related Party € / shares in Units, € in Millions, $ in Millions	Nov. 06, 2023 EUR (€)	Nov. 01, 2023 EUR (€)	Sep. 30, 2023 € / shares	Sep. 30, 2023 USD ($)
Dividends Payable [Line Items]
Dividends payable, amount per share | € / shares			€ 0.53
Dividends payable | $				$ 78
Forecast
Dividends Payable [Line Items]
Payments of capital distribution	€ 184
Forecast | Subsequent Event
Dividends Payable [Line Items]
Shareholder approval amount		€ 168

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