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Goodwill and Intangible Assets Amortization of Intangible Assets (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months $ 184
Finite-Lived Intangible Assets, Amortization Expense, Year Two 184
Finite-Lived Intangible Assets, Amortization Expense, Year Three 184
Finite-Lived Intangible Assets, Amortization Expense, Year Four 184
Finite-Lived Intangible Assets, Amortization Expense, Year Five $ 177