Long-Term Debt - Summary of Long-Term Debt Carrying Values Including Unamortized Discounts and Premiums (Detail) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2015	Feb. 29, 2016	Jan. 21, 2016	Nov. 30, 2015
Debt Instrument [Line Items]
Long-term debt		$ 5,698,169		$ 5,640,722
Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt		5,675,962		5,640,722
Secured debt [Member]
Debt Instrument [Line Items]
Long-term debt		$ 22,207		0
5.5% Senior Notes, due 2016 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		5.50%
Effective interest rate		2.52%
5.5% Senior Notes, due 2016 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt		$ 350,434		353,025
5.125% Senior Notes, due 2018 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		5.125%
Effective interest rate		3.46%
5.125% Senior Notes, due 2018 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt		$ 827,217		830,298
8.5% Senior Notes, due 2019 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		8.50%
Effective interest rate		4.00%
8.5% Senior Notes, due 2019 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt		$ 799,289		806,125
2.375% Euro Medium Term Notes, due 2020 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		2.375%
Effective interest rate		2.42%
2.375% Euro Medium Term Notes, due 2020 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt		$ 542,093		526,436
6.875% Senior Note, due 2021 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		6.875%
Effective interest rate		4.40%
6.875% Senior Note, due 2021 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt		$ 835,085		838,765
2.25% Euro Medium Term Notes, due 2022 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		2.25%
Effective interest rate		4.08%
2.25% Euro Medium Term Notes, due 2022 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt		$ 3,905		3,779
5.125% Senior Notes, due 2023 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		5.125%
Effective interest rate		4.55%
5.125% Senior Notes, due 2023 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt		$ 620,267		620,890
6.45% Senior Debentures, due 2027 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		6.45%
Effective interest rate		5.46%
6.45% Senior Debentures, due 2027 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt		$ 379,244		379,711
3.875% Convertible Senior Debentures due 2029 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		3.875%
Effective interest rate		3.50%
Consolidated Statement of Earnings gain (loss) amount	$ 100
3.875% Convertible Senior Debentures due 2029 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt		$ 347,084		347,307
6.25% Senior Debentures, due 2036 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		6.25%
Effective interest rate		6.03%
6.25% Senior Debentures, due 2036 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt		$ 512,649		512,730
6.50% Senior Notes, due 2043 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		6.50%
Effective interest rate		6.09%
6.50% Senior Notes, due 2043 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt		$ 421,577		421,656
Fixed to Floating Rate Structured Notes, due February 26, 2019 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt		10,494		0
Variable Rate Structured Notes, due February 18, 2028 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt		26,624		0
Class A Notes, Due 2022 [Member]
Debt Instrument [Line Items]
Long-term debt			$ 15,000
Effective interest rate			6.75%
Class A Notes, Due 2022 [Member] | Secured debt [Member]
Debt Instrument [Line Items]
Long-term debt		$ 14,781		0
Effective interest rate		6.75%
Class B Notes, Due 2022 [Member]
Debt Instrument [Line Items]
Long-term debt			$ 7,500
Effective interest rate			13.45%
Class B Notes, Due 2022 [Member] | Secured debt [Member]
Debt Instrument [Line Items]
Long-term debt		$ 7,426		$ 0
Effective interest rate		13.45%