v3.19.3.a.u2
Intangible Assets (Aggregate Amount of Amortization Expense) (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months $ 24
Finite-Lived Intangible Assets, Amortization Expense, Year Two 20
Finite-Lived Intangible Assets, Amortization Expense, Year Three 16
Finite-Lived Intangible Assets, Amortization Expense, Year Four 12
Finite-Lived Intangible Assets, Amortization Expense, Year Five $ 7