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Intangible assets and goodwill - Estimated Amortization of Intangible Assets (Details)
$ in Millions
Dec. 31, 2023
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2024 $ 4,300
2025 3,500
2026 2,900
2027 2,300
2028 $ 1,600