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Identifiable Definite-Lived Intangible Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2014
Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 738,351 $ 796,827
Accumulated Amortization (260,088) (231,103)
Net Carrying Amount 478,263 565,724
Indefinite-Lived Slots and Routes 192,577 229,599
Identifiable Intangible Assets Gross 930,928 1,026,426
Intangible Assets, Net (Excluding Goodwill) 670,840 795,323
Patents    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 175,186 181,847
Accumulated Amortization (95,526) (91,736)
Net Carrying Amount 79,660 90,111
Trademarks    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 75,645 85,922
Accumulated Amortization (37,053) (35,994)
Net Carrying Amount 38,592 49,928
Licensing Agreements    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 34,638 31,950
Accumulated Amortization (22,806) (20,992)
Net Carrying Amount 11,832 10,958
Customer Relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 452,882 497,108
Accumulated Amortization (104,703) (82,381)
Net Carrying Amount 348,179 414,727
Trademarks    
Finite-Lived Intangible Assets [Line Items]    
Indefinite-Lived Intangible Assets (Excluding Goodwill) $ 192,577 $ 229,599