Long-Term Debt - Summary of Long-Term Debt Carrying Values Including Unamortized Discounts and Premiums (Detail) (USD $) In Thousands, unless otherwise specified	May 31, 2014	Nov. 30, 2013
Debt Instrument [Line Items]
Long-term debt	$ 6,729,484	$ 6,232,806
Unsecured debt [Member]
Debt Instrument [Line Items]
Long-term debt	6,664,484	6,032,806
Secured debt [Member]
Debt Instrument [Line Items]
Long-term debt	65,000	200,000
5.875% Senior Notes, due 2014 [Member] | Unsecured debt [Member]
Debt Instrument [Line Items]
Long-term debt	250,243	255,676
3.875% Senior Note, due 2015 [Member] | Unsecured debt [Member]
Debt Instrument [Line Items]
Long-term debt	512,096	516,204
5.5% Senior Notes, due 2016 [Member] | Unsecured debt [Member]
Debt Instrument [Line Items]
Long-term debt	368,235	373,178
5.125% Senior Notes, due 2018 [Member] | Unsecured debt [Member]
Debt Instrument [Line Items]
Long-term debt	848,235	854,011
8.5% Senior Notes, due 2019 [Member] | Unsecured debt [Member]
Debt Instrument [Line Items]
Long-term debt	845,739	858,425
2.375% Euro Medium Term Notes, due 2020 [Member] | Unsecured debt [Member]
Debt Instrument [Line Items]
Long-term debt	679,951
6.875% Senior Note, due 2021 [Member] | Unsecured debt [Member]
Debt Instrument [Line Items]
Long-term debt	860,021	866,801
2.25% Euro Medium Term Notes, due 2022 [Member] | Unsecured debt [Member]
Debt Instrument [Line Items]
Long-term debt	4,762	4,792
5.125% Senior Notes, due 2023 [Member] | Unsecured debt [Member]
Debt Instrument [Line Items]
Long-term debt	624,482	625,626
6.45% Senior Debentures, due 2027 [Member] | Unsecured debt [Member]
Debt Instrument [Line Items]
Long-term debt	382,381	383,224
3.875% Convertible Senior Debentures due 2029 [Member] | Unsecured debt [Member]
Debt Instrument [Line Items]
Long-term debt	353,037	359,281
6.25% Senior Debentures, due 2036 [Member] | Unsecured debt [Member]
Debt Instrument [Line Items]
Long-term debt	513,197	513,343
6.50% Senior Notes, due 2043 [Member] | Unsecured debt [Member]
Debt Instrument [Line Items]
Long-term debt	$ 422,105	$ 422,245