Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Narratives (Details)

v3.20.2
Revenue Recognition - Narratives (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]        
Allowance for credit losses, period increase (decrease) $ 27   $ 50  
Allowance for credit losses 153 $ 153 153 $ 93
Provisions for doubtful receivables 153 $ 105    
Contract assets 303   303 272
Deferred revenue 355   355 264
Contract with Customer, Liability, Noncurrent $ 26   $ 26 $ 26