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Goodwill and Intangible Assets (Amortization Expense of Intangible Assets) (Details)
$ in Millions
Dec. 31, 2021
USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2022 $ 200
2023 185
2024 173
2025 166
2026 $ 161