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Goodwill and intangible assets - Narrative (Details) - USD ($)
$ in Millions
9 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]    
Intangible amortization expense $ 374 $ 237
Estimated amortization expense, year ending June 30, 2023 520  
Estimated amortization expense, year ending June 30, 2024 564  
Estimated amortization expense, year ending June 30, 2025 556  
Estimated amortization expense, year ending June 30, 2026 551  
Estimated amortization expense, year ending June 30, 2027 $ 545