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Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets (Future amortization expense) (Details)
$ in Millions
Dec. 31, 2021
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2022 $ 2,577
2023 2,414
2024 2,320
2025 2,222
2026 $ 2,164