Employee Benefit Plans - Schedule of total weighted average asset allocations (Details) - U.K. - Pension Plans	May 31, 2024	May 31, 2023
Defined Benefit Plan, Information about Plan Assets [Abstract]
Weighted average asset allocations	100.00%	100.00%
Equity securities
Defined Benefit Plan, Information about Plan Assets [Abstract]
Weighted average asset allocations	0.00%	29.60%
Cash and cash equivalents
Defined Benefit Plan, Information about Plan Assets [Abstract]
Weighted average asset allocations	4.10%	5.10%
Liability-driven instruments
Defined Benefit Plan, Information about Plan Assets [Abstract]
Weighted average asset allocations	43.50%	41.70%
Real estate
Defined Benefit Plan, Information about Plan Assets [Abstract]
Weighted average asset allocations	0.00%	6.80%
Other
Defined Benefit Plan, Information about Plan Assets [Abstract]
Weighted average asset allocations	15.10%	16.80%