Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Details)

v3.20.2
Income Taxes - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2020
Dec. 31, 2019
Operating Loss Carryforwards [Line Items]            
Income tax expense $ (74) $ (76) $ (154) $ (157)    
Effective income tax rate percent 23.30% 22.40% 22.30% 27.00%    
Valuation allowance $ 69   $ 69     $ 70
Forecast            
Operating Loss Carryforwards [Line Items]            
Effective income tax rate percent         23.00%