Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

v3.20.4
Income Taxes (Details) - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Jan. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Operating loss carryforwards        
Tax loss and credit carryforwards   $ 141.0 $ 89.0  
Operating loss carryforwards not expected to be utilized   122.0    
Unrecognized tax benefits        
Balance at beginning of year $ 144.0 140.0 136.0 $ 123.0
Additions based on tax positions related to the current year   3.0 11.0 11.0
Additions for tax positions of prior years   1.0 1.0 2.0
Reductions for tax positions of prior years     (8.0)  
Balance at end of year   144.0 140.0 136.0
Unrecognized tax benefit that would impact effective rate   74.0 82.0 $ 87.0
Accrued interest and penalties related to uncertain tax positions   35.0 $ 29.0  
Minimum        
Unrecognized tax benefits        
Estimated potential income tax increase 45.0      
Maximum        
Unrecognized tax benefits        
Anticipated decrease in unrecognized tax benefits   4.0    
Estimated potential income tax increase $ 55.0      
2009 Through 2011 pre Spin-Off Tax Years | Minimum        
Unrecognized tax benefits        
Income Tax Examination, Estimate of Possible Loss   20.0    
2009 Through 2011 pre Spin-Off Tax Years | Maximum        
Unrecognized tax benefits        
Income Tax Examination, Estimate of Possible Loss   30.0    
Tripadvisor        
Operating loss carryforwards        
Tax loss and credit carryforwards   119.0    
NOL carryforwards subject to expiration   17.1    
NOL carryforwards not subject to expiration   4.9    
Tripadvisor | Minimum        
Unrecognized tax benefits        
Income Tax Examination, Estimate of Possible Loss   95.0    
Tripadvisor | Maximum        
Unrecognized tax benefits        
Income Tax Examination, Estimate of Possible Loss   105.0    
TripCo        
Operating loss carryforwards        
Tax loss and credit carryforwards   $ 22.0