Long-Term Debt - Summary of Long-Term Debt Carrying Values Including Unamortized Discounts and Premiums (Details) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018	Jul. 19, 2019	Nov. 30, 2018	May 16, 2018	Jan. 17, 2017
Debt Instrument [Line Items]
Long-term debt	$ 6,767,163,000		$ 6,767,163,000			$ 6,546,283,000
(Loss) gain associated with an interest rate swap based on its designation as a fair value hedge	(467,000)	$ 60,000	(2,445,000)	$ 1,692,000
Long-term debt at fair value	1,014,509,000		1,014,509,000			686,170,000
Structured notes
Debt Instrument [Line Items]
Debt principal amount	283,200,000		283,200,000
Unsecured Debt
Debt Instrument [Line Items]
Long-term debt	$ 6,578,236,000		$ 6,578,236,000			6,362,744,000
Unsecured Debt | 8.500% Senior Notes
Debt Instrument [Line Items]
Debt instrument interest rate	8.50%		8.50%
Effective Interest Rate	0.00%		0.00%
Long-term debt	$ 0		$ 0			699,659,000
Unsecured Debt | 2.375% Euro Medium Term Notes
Debt Instrument [Line Items]
Debt instrument interest rate	2.375%		2.375%
Effective Interest Rate	2.42%		2.42%
Long-term debt	$ 548,566,000		$ 548,566,000			564,702,000
Unsecured Debt | 6.875% Senior Notes
Debt Instrument [Line Items]
Debt instrument interest rate	6.875%		6.875%
Effective Interest Rate	4.40%		4.40%
Long-term debt	$ 779,078,000		$ 779,078,000			791,814,000
Unsecured Debt | 2.250% Euro Medium Term Notes
Debt Instrument [Line Items]
Debt instrument interest rate	2.25%		2.25%
Effective Interest Rate	4.08%		4.08%
Long-term debt	$ 4,171,000		$ 4,171,000			4,243,000
Unsecured Debt | 5.125% Senior Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.125%		5.125%
Effective Interest Rate	4.55%		4.55%
Long-term debt	$ 610,762,000		$ 610,762,000			612,928,000
Unsecured Debt | 1.000% Euro Medium Term Notes
Debt Instrument [Line Items]
Debt instrument interest rate	1.00%		1.00%		1.00%
Effective Interest Rate	1.00%		1.00%
Long-term debt	$ 546,855,000		$ 546,855,000			0
Debt principal amount					$ 553,600,000
Unsecured Debt | 4.850% Senior Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.85%		4.85%
Effective Interest Rate	4.93%		4.93%
Long-term debt	$ 782,156,000		$ 782,156,000			709,484,000
Debt principal amount								$ 750,000,000.0
Unsecured Debt | 6.450% Senior Debentures
Debt Instrument [Line Items]
Debt instrument interest rate	6.45%		6.45%
Effective Interest Rate	5.46%		5.46%
Long-term debt	$ 371,998,000		$ 371,998,000			373,669,000
Unsecured Debt | 4.150% Senior Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.15%		4.15%
Effective Interest Rate	4.26%		4.26%
Long-term debt	$ 988,440,000		$ 988,440,000			987,788,000
Debt principal amount		1,000,000,000.0		1,000,000,000.0
Unsecured Debt | 6.250% Senior Debentures
Debt Instrument [Line Items]
Debt instrument interest rate	6.25%		6.25%
Effective Interest Rate	6.03%		6.03%
Long-term debt	$ 511,363,000		$ 511,363,000			511,662,000
Unsecured Debt | 6.500% Senior Notes
Debt Instrument [Line Items]
Debt instrument interest rate	6.50%		6.50%
Effective Interest Rate	6.09%		6.09%
Long-term debt	$ 420,338,000		$ 420,338,000			420,625,000
Unsecured Debt | Structured notes
Debt Instrument [Line Items]
Long-term debt	1,014,509,000		1,014,509,000			686,170,000
Debt principal amount		$ 162,600,000		162,600,000
Secured Debt | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	188,927,000		188,927,000			183,539,000
Debt principal amount							$ 190,000,000.0
Interest rate swaps | Unsecured Debt | 4.850% Senior Notes
Debt Instrument [Line Items]
(Loss) gain associated with an interest rate swap based on its designation as a fair value hedge			(72,300,000)	$ 24,100,000
Level 2 and Level 3
Debt Instrument [Line Items]
Long-term debt at fair value	$ 7,046,600,000		$ 7,046,600,000			$ 6,423,600,000