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Identifiable Intangible Assets and Goodwill - Expected Annual Amortization Expense (Details)
$ in Millions
Dec. 31, 2021
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2022 $ 3,279
2023 2,936
2024 2,686
2025 2,500
2026 $ 2,449