Calculation of Net Earnings (Loss) Per Common Share (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 28, 2015	Mar. 29, 2014
Earnings Per Share [Line Items]
Net income (loss) attributable to Office Depot, Inc.	$ 45us-gaap_NetIncomeLoss	$ (109)us-gaap_NetIncomeLoss
Weighted-average shares outstanding	544	530
Basic earnings (loss) per share	$ 0.08us-gaap_EarningsPerShareBasic	$ (0.21)us-gaap_EarningsPerShareBasic
Net income (loss) attributable to Office Depot, Inc.	$ 45us-gaap_NetIncomeLoss	$ (109)us-gaap_NetIncomeLoss
Weighted-average shares outstanding	544	530
Stock options and restricted stock	9
Diluted weighted-average shares outstanding	553	530
Diluted earnings (loss) per share	$ 0.08us-gaap_EarningsPerShareDiluted	$ (0.21)us-gaap_EarningsPerShareDiluted

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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