Long-Term Debt - Summary of Long-Term Debt Carrying Values Including Unamortized Discounts and Premiums (Detail) (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2014
Nov. 30, 2013
Debt Instrument [Line Items]    
Long-term debt $ 6,625,978 $ 6,232,806
Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt 6,367,978 6,032,806
Secured debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt 258,000 200,000
5.875% Senior Notes, due 2014 [Member] | Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt   255,676
3.875% Senior Note, due 2015 [Member] | Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt 510,026 516,204
5.5% Senior Notes, due 2016 [Member] | Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt 365,739 373,178
5.125% Senior Notes, due 2018 [Member] | Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt 845,310 854,011
8.5% Senior Notes, due 2019 [Member] | Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt 839,300 858,425
2.375% Euro Medium Term Notes, due 2020 [Member] | Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt 655,129  
6.875% Senior Note, due 2021 [Member] | Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt 856,575 866,801
2.25% Euro Medium Term Notes, due 2022 [Member] | Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt 4,605 4,792
5.125% Senior Notes, due 2023 [Member] | Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt 623,900 625,626
6.45% Senior Debentures, due 2027 [Member] | Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt 381,951 383,224
3.875% Convertible Senior Debentures due 2029 [Member] | Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt 350,288 359,281
6.25% Senior Debentures, due 2036 [Member] | Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt 513,122 513,343
6.50% Senior Notes, due 2043 [Member] | Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term debt $ 422,033 $ 422,245