Redeemable Noncontrolling Interests - Additional Information (Detail) - Maximum |
6 Months Ended |
---|---|
Jun. 30, 2015 | |
During the first quarter of 2016 | |
Noncontrolling Interest [Line Items] | |
Minority shareholders right to sell on remaining shares of trivago | 50.00% |
During the first quarter of 2018 | |
Noncontrolling Interest [Line Items] | |
Minority shareholders right to sell on remaining shares of trivago | 100.00% |