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Revenue - Narrative (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disaggregation of Revenue [Line Items]                      
Net sales $ 456,000,000 $ 462,000,000 $ 489,000,000 $ 495,000,000 $ 535,000,000 $ 526,000,000 $ 572,000,000 $ 594,000,000 $ 1,902,000,000 $ 2,228,000,000 $ 2,322,000,000
Capitalized contract costs $ 12,000,000       $ 12,000,000       12,000,000 12,000,000  
Non-US                      
Disaggregation of Revenue [Line Items]                      
Net sales                 $ 175,000,000 $ 356,000,000 $ 159,000,000