Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Contract Balances (Details)

v3.19.1
Segment Information - Contract Balances (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Jan. 01, 2019
Dec. 31, 2018
Jan. 01, 2018
Segment Information          
Accounts receivable $ 227     $ 205  
Contract assets 9     7  
Total 236     $ 212  
Deferred revenue     $ 63   $ 59
Contract with customer revenue recognized $ 34 $ 32