XML 68 R80.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Goodwill and Intangible Assets - Actual and Estimated Future Amortization Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]      
Amortization of Intangible Assets $ 112 $ 174 $ 245
Estimated future amounts for the year ended December 31,      
2020 64    
2021 32    
2022 24    
2023 17    
2024 11    
Thereafter 18    
Total estimated future amounts $ 166