Segment Information - Summary of Financial Information Related to Company's Reportable Business Segments (Details) $ in Thousands	12 Months Ended
	Nov. 30, 2025 USD ($) segment	Nov. 30, 2024 USD ($)	Nov. 30, 2023 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	3
Number of operating segments | segment	3
Revenue	$ 62,508,086	$ 58,452,436	$ 57,555,416
Cost of Revenue	(58,139,104)	(54,471,130)	(53,598,587)
Gross Profit	4,368,982	3,981,306	3,956,829
Payroll and payroll related expenses	(1,833,414)	(1,675,823)	(1,645,267)
Depreciation	(100,307)	(95,870)	(97,461)
Amortization expense	(296,258)	(292,304)	(293,737)
Acquisition, integration and restructuring costs	(7,180)	(71,314)	(206,235)
Share-based compensation expense	(66,428)	(69,201)	(49,273)
Other segment items	(650,476)	(582,583)	(586,824)
Operating income	1,414,919	1,194,211	1,078,032
Interest Expense, Nonoperating	(356,608)	(319,458)	(288,318)
Other expense, net	(1,057)	(8,718)	(206)
Income before income taxes	1,057,254	866,035	789,508
Purchases of property, plant and equipment	(110,130)	(125,075)	(94,534)
Total assets	34,250,898	30,274,479
Depreciation recorded within cost of revenue	17,700	13,900	9,800
Accelerated depreciation recorded within acquisition, integration and restructuring costs		5,500	17,400
Americas | Americas
Segment Reporting Information [Line Items]
Revenue	36,176,520	34,791,848	34,573,859
Cost of Revenue	(33,569,644)	(32,428,806)	(32,186,592)
Gross Profit	2,606,876	2,363,042	2,387,267
Payroll and payroll related expenses	(988,291)	(921,300)	(909,285)
Depreciation	(60,417)	(57,242)	(63,069)
Amortization expense	(164,167)	(165,860)	(169,569)
Acquisition, integration and restructuring costs	(4,322)	(53,245)	(165,845)
Share-based compensation expense	(43,445)	(45,107)	(35,955)
Other segment items	(340,840)	(302,740)	(306,939)
Operating income	1,005,394	817,548	736,605
Purchases of property, plant and equipment	(76,422)	(99,238)	(68,667)
Total assets	18,426,557	16,842,254
Europe | Europe
Segment Reporting Information [Line Items]
Revenue	21,694,750	19,634,156	19,422,297
Cost of Revenue	(20,257,031)	(18,318,369)	(18,133,330)
Gross Profit	1,437,719	1,315,787	1,288,967
Payroll and payroll related expenses	(705,725)	(632,823)	(624,043)
Depreciation	(34,478)	(33,252)	(29,354)
Amortization expense	(128,754)	(123,567)	(121,680)
Acquisition, integration and restructuring costs	(2,112)	(16,831)	(37,091)
Share-based compensation expense	(19,056)	(20,318)	(11,255)
Other segment items	(247,779)	(225,083)	(229,067)
Operating income	299,815	263,913	236,477
Purchases of property, plant and equipment	(24,647)	(20,832)	(21,027)
Total assets	13,196,300	11,259,735
APJ | APJ
Segment Reporting Information [Line Items]
Revenue	4,636,816	4,026,432	3,559,260
Cost of Revenue	(4,312,429)	(3,723,955)	(3,278,665)
Gross Profit	324,387	302,477	280,595
Payroll and payroll related expenses	(139,398)	(121,700)	(111,939)
Depreciation	(5,412)	(5,376)	(5,038)
Amortization expense	(3,337)	(2,877)	(2,488)
Acquisition, integration and restructuring costs	(746)	(1,238)	(3,299)
Share-based compensation expense	(3,927)	(3,776)	(2,063)
Other segment items	(61,857)	(54,760)	(50,818)
Operating income	109,710	112,750	104,950
Purchases of property, plant and equipment	(9,061)	(5,005)	$ (4,840)
Total assets	$ 2,628,041	$ 2,172,490