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Deferred Income Tax Assets (Liabilities) (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Schedule of Deferred Income Tax Assets and Liabilities [Line Items]    
Tax credit carryforwards $ 77,396 $ 59,372
Research and development expenses 187,477 181,449
Loss carryforwards 124,201 131,989
Allowances and reserves 202,141 229,056
Deferred compensation 111,850 118,878
Postretirement benefits 37,479 72,912
Other 66,599 67,942
Gross deferred income tax assets 807,143 861,598
Intangible assets (282,737) (279,592)
Other (5,555) (8,262)
Gross deferred income tax liabilities (288,292) (287,854)
Deferred income tax asset valuation allowances (64,641) (67,705)
Net deferred income tax assets $ 454,210 $ 506,039