Goodwill, Service Contracts and Other Assets - Information Regarding Service Contracts and Other Assets (Details) - USD ($) $ in Thousands	May 31, 2022	May 31, 2021	May 31, 2020
Information regarding service contracts and other assets
Total future amortization expense	$ 718,612
Other assets, carrying amount	728,160	$ 609,133
Other assets, accumulated amortization	384,050	298,719
Other assets, net	344,110	310,414
Capitalized contract costs
Information regarding service contracts and other assets
Other assets, carrying amount	551,582	459,079
Other assets, accumulated amortization	319,358	231,940
Other assets, net	232,224	227,139
Current portion of capitalized contract costs	83,700	79,400
Noncompete and consulting agreements
Information regarding service contracts and other assets
Other assets, carrying amount	50,637	44,683
Other assets, accumulated amortization	43,775	42,408
Other assets, net	6,862	2,275
Other
Information regarding service contracts and other assets
Other assets, carrying amount	125,941	105,371
Other assets, accumulated amortization	20,917	24,371
Other assets, net	105,024	81,000
Service contracts
Information regarding service contracts and other assets
Service contracts, carrying amount	1,001,311	961,942
Service contracts, accumulated amortization	609,673	553,497
Total future amortization expense	$ 391,638	$ 408,445	$ 451,529