Retirement And Benefit Plans (Allocation Of Pension Plan Assets) (Details)	Dec. 31, 2011	Dec. 25, 2010
Defined Benefit Plan Disclosure [Line Items]
Allocation of pension plan assets	100.00%	100.00%
OfficeMax Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Allocation of pension plan assets, equity securities	1.20%	5.00%
U.S. Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Allocation of pension plan assets, equity securities	27.00%	15.70%
International Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Allocation of pension plan assets, equity securities	10.30%	9.20%
Global Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Allocation of pension plan assets, equity securities	15.80%	14.40%
Fixed-Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Allocation of pension plan assets, debt securities	45.70%	55.70%