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Goodwill and Other Intangible Assets - Schedule of estimated future amortization expense on intangible assets (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2021 $ 144
2022 102
2023 91
2024 73
2025 59
Thereafter 171
Total $ 640