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Deferred Tax Liabilities and Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 29, 2013
Dec. 30, 2012
Liabilities    
Accelerated depreciation $ 302,650 $ 255,612
Accelerated amortization of deductible intangibles 678,744 174,229
Other 24,882 26,989
Total deferred tax liabilities 1,006,276 456,830
Assets    
Accrued compensation costs 75,492 77,684
Pension 219,413 368,803
Postretirement medical and life 55,921 65,573
Federal tax benefits of uncertain state tax positions 12,474 31,002
Partnership investments including impairments 1,140 39,542
Loss carryforwards 74,018 58,596
Other 84,738 66,164
Total deferred tax assets 523,196 707,364
Valuation allowance 83,579 76,419
Total net deferred tax assets (liabilities) (566,659) 174,115
Net current deferred tax assets 21,245 15,840
Net long-term deferred tax assets (liabilities) $ (587,904) $ 158,275