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Debt - Narrative (Details) £ in Millions, $ in Millions		12 Months Ended
Debt - Narrative (Details) £ in Millions, $ in Millions	Aug. 02, 2021 GBP (£)	Jun. 30, 2022 USD ($)	Jun. 30, 2022 GBP (£)	Aug. 27, 2021 USD ($)
Debt Instrument [Line Items]
Long-term debt payable in 2023		$ 302.0
Long-term debt payable in 2024		1,976.0
Long-term debt payable in 2025		1,234.0
Long-term debt payable in 2026		0.4
Long-term debt payable in 2027		700.0
Bridge Credit Agreement \| Line of Credit \| Bridge Loan
Debt Instrument [Line Items]
Line of credit \| £	£ 6,524		£ 591
Expiration period	364 days
Financing fee		52.0
Senior Notes \| Senior Notes, 3.65%, due 2024
Debt Instrument [Line Items]
Aggregate principal amount issued		$ 1,400.0
Interest rate		3.65%	3.65%
Senior Notes \| Senior Notes, 4.25%, due 2027
Debt Instrument [Line Items]
Aggregate principal amount issued		$ 1,200.0
Interest rate		4.25%	4.25%
Senior Notes \| Senior Notes, 4.50%, due 2029
Debt Instrument [Line Items]
Aggregate principal amount issued		$ 1,000.0
Interest rate		4.50%	4.50%
Senior Notes \| Senior Note, 3.65% to 4.50%, due 2024 - 2049
Debt Instrument [Line Items]
Redemption price, percentage		101.00%
Unamortized debt issuance costs, including discounts		$ 33.0
Senior Notes \| Term Loan Facility \| Line of Credit
Debt Instrument [Line Items]
Line of credit				$ 2,000.0