Long-Term Debt - Additional Information (Detail)
0 Months Ended 0 Months Ended 0 Months Ended 0 Months Ended 0 Months Ended 9 Months Ended
Jun. 26, 2014
USD ($)
Aug. 31, 2014
USD ($)
Feb. 28, 2013
USD ($)
Aug. 26, 2011
USD ($)
Sep. 11, 2014
Leucadia [Member]
Subsequent event [Member]
USD ($)
Sep. 11, 2014
Leucadia [Member]
Subsequent event [Member]
USD ($)
Jan. 15, 2013
New senior unsecured long-term debt [Member]
USD ($)
Jan. 15, 2013
5.125% Senior Notes, due 2023 [Member]
USD ($)
Jan. 15, 2013
5.125% Senior Notes, due 2023 [Member]
USD ($)
Jan. 15, 2013
6.5% Senior Notes, due 2043 [Member]
USD ($)
Jan. 15, 2013
6.5% Senior Notes, due 2043 [Member]
USD ($)
May 20, 2014
Euro Medium Term Note Program [Member]
USD ($)
May 20, 2014
2.375% Euro Medium Term Notes, due 2020 [Member]
EUR (€)
Aug. 31, 2014
2.375% Euro Medium Term Notes, due 2020 [Member]
May 20, 2014
2.375% Euro Medium Term Notes, due 2020 [Member]
EUR (€)
Aug. 31, 2014
3.875% Convertible Senior Debentures due 2029 [Member]
USD ($)
Aug. 31, 2014
3.875% Convertible Senior Debentures due 2029 [Member]
Leucadia [Member]
USD ($)
Trading_day
Debt Instrument [Line Items]                                  
Long-term debt at fair value     $ 6,100,000,000                            
Difference between fair value over the total principal amount     536,500,000                            
Issuance of senior unsecured long-term debt             1,000,000,000   600,000,000   400,000,000 2,000,000,000     500,000,000 345,000,000  
Proceeds, net of original issue discount amount               595,600,000   391,700,000     498,700,000        
Senior long-term debt, interest rate                 5.125%   6.50%     2.375% 2.375% 3.875% 3.875%
Senior long-term debt, due date               2023   2043     2020        
Debenture principal amount         1,000                        
Debt instrument convertible conversion ratio         22.1312                        
Conversion price of common stock           $ 45.19                      
Debt instrument convertible conversion ratio                                 130.00%
Earliest period of conversion price                                 20
Latest period of conversion price                                 30 days
Consecutive trading days                                 10 days
Trading price per debenture related to common stock                                 95.00%
Debentures convertible at holder's options                                 1) Leucadia's common stock price is greater than or equal to 130% of the conversion price for at least 20 trading days in a period of 30 consecutive trading days; 2) if the trading price per debenture is less than 95% of the price of the common stock times the conversion ratio for any 10 consecutive trading days; 3) if the debentures are called for redemption; or 4) upon the occurrence of specific corporate actions.
Description to redeem the debentures for par, plus accrued interest                                 On or after November 1, 2012 if the price of Leucadia's common stock is greater than 130% of the conversion price for at least 20 days in a period of 30 consecutive trading days and we may redeem the debentures for par, plus accrued interest, at our election any time on or after November 1, 2017.
Description of contingent debenture interest payment                                 November 1, 2017, 2019 and 2024. In addition to ordinary interest, commencing November 1, 2017, contingent interest will accrue at 0.375% if the average trading price of a debenture for 5 trading days ending on and including the third trading day immediately preceding a six-month interest period equals or exceed $1,200 per $1,000 debenture
Trading price of contingent interest                                 1,200
Revolving credit facility       950,000,000                          
Borrowed unsecured credit facility-JBL   250,000,000   250,000,000                          
Amended and restated credit facility period 3 years                                
Line of credit reduced borrowing capacity $ 750,000,000