Quarterly report pursuant to Section 13 or 15(d)

COVID-19 Related Liabilities (Details)

v3.21.2
COVID-19 Related Liabilities (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Restructuring Cost and Reserve [Line Items]        
Liability beginning balance     $ 26  
COVID-19 related costs $ 1 $ 45 2 $ 67
Cash payments     (1)  
Liability ending balance 27   27  
COVID-19 Plan        
Restructuring Cost and Reserve [Line Items]        
Liability beginning balance     6  
COVID-19 related costs     0  
Cash payments     (5)  
Liability ending balance 1   1  
Personnel-related        
Restructuring Cost and Reserve [Line Items]        
Liability beginning balance     1  
Cash payments     (1)  
Liability ending balance 0   0  
Personnel-related | COVID-19 Plan        
Restructuring Cost and Reserve [Line Items]        
Liability beginning balance     6  
COVID-19 related costs     0  
Cash payments     (5)  
Liability ending balance $ 1   $ 1