Basis of Presentation - Schedule of Impact of Adopting New Revenue Guidance Balance Sheet (Details) - USD ($) $ in Thousands	Nov. 30, 2018	Jun. 01, 2018	May 31, 2018	Nov. 30, 2017
ASSETS
Accounts receivable, net	$ 904,062	$ 818,009	$ 804,583
Inventories, net	321,874	269,082	280,347
Income taxes, current	36,595		19,634
Prepaid expenses and other current assets	106,614	95,846	32,383
Total current assets	2,215,870	2,043,556	1,977,932
Other assets, net	228,386	216,818	29,315
Total assets	7,405,083	7,211,341	6,958,214	$ 6,978,801
Long-term liabilities:
Deferred income taxes	435,461	416,516	352,581
Total long-term liabilities	3,263,153	3,229,766	3,165,831
Retained earnings	6,261,756	6,027,019	5,837,827
Total shareholders’ equity	3,027,244	3,205,718	3,016,526
Total liabilities and shareholders' equity	7,405,083	$ 7,211,341	$ 6,958,214
Under Historical Guidance
ASSETS
Accounts receivable, net	889,716
Inventories, net	334,038
Income taxes, current	36,600
Prepaid expenses and other current assets	39,642
Total current assets	2,146,721
Other assets, net	32,666
Total assets	7,140,214
Long-term liabilities:
Deferred income taxes	368,665
Total long-term liabilities	3,196,357
Retained earnings	6,063,683
Total shareholders’ equity	2,829,171
Total liabilities and shareholders' equity	7,140,214
Accounting Standards Update 2014-09 | Impact of Adopting ASU 2014-09
ASSETS
Accounts receivable, net	14,346
Inventories, net	(12,164)
Income taxes, current	(5)
Prepaid expenses and other current assets	66,972
Total current assets	69,149
Other assets, net	195,720
Total assets	264,869
Long-term liabilities:
Deferred income taxes	66,796
Total long-term liabilities	66,796
Retained earnings	198,073
Total shareholders’ equity	198,073
Total liabilities and shareholders' equity	$ 264,869