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Goodwill and intangible assets - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]    
Intangible amortization expense $ 229 $ 159
Estimated amortization expense, year ending June 30, 2023 520  
Estimated amortization expense, year ending June 30, 2024 559  
Estimated amortization expense, year ending June 30, 2025 551  
Estimated amortization expense, year ending June 30, 2026 546  
Estimated amortization expense, year ending June 30, 2027 $ 540