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Accumulated Other Comprehensive Income
 6 Months Ended
Jun. 30, 2021
Equity [Abstract]  
Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income
The components of accumulated other comprehensive income, net of tax, consist of the following (in millions):
 June 30, 2021December 31, 2020
Foreign currency translation adjustment$70 $87 
Net unrealized gains on investments, net of tax— 7 
        Accumulated other comprehensive income$70 $94 

Reclassification adjustments out of accumulated other comprehensive income into net income were not material for all periods presented.