XML 73 R57.htm IDEA: XBRL DOCUMENT v3.10.0.1
Estimates (Estimated Aggregate Amortization Expense) (Details)
$ in Millions
Dec. 31, 2018
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2019 $ 346
2020 345
2021 342
2022 325
2023 $ 319