Accounting Policies (Policies)	9 Months Ended
Oct. 01, 2011
Accounting Policies [Abstract]
Basis of presentation	Basis of presentation The unaudited interim financial information of Kellogg Company (the Company) included in this report reflects normal recurring adjustments that management believes are necessary for a fair statement of the results of operations, financial position, equity and cash flows for the periods presented. This interim information should be read in conjunction with the financial statements and accompanying notes contained on pages 27 to 57 of the Company's 2010 Annual Report on Form 10-K. The condensed balance sheet data at January 1, 2011 was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States. The results of operations for the quarterly period ended October 1, 2011 are not necessarily indicative of the results to be expected for other interim periods or the full year.
Accounting standards to be adopted in future periods	Accounting standards to be adopted in future periods In September 2011, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2011-08, “Testing Goodwill for Impairment,” allowing entities the option to first assess qualitative factors to determine whether it is necessary to perform the two-step quantitative goodwill impairment test. Under ASU No. 2011-08, an entity would not be required to calculate the fair value of a reporting unit unless the entity determines, based on a qualitative assessment, that it is more likely than not that its fair value is less than its carrying amount. ASU No. 2011-08 is effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011, with early adoption permitted. The Company will consider early adoption of ASU 2011-08 in connection with its annual goodwill impairment evaluation in the fourth quarter of 2011. In June 2011, the FASB issued ASU No. 2011-05, “Presentation of Comprehensive Income,” requiring most entities to present items of net income and other comprehensive income either in one continuous statement — referred to as the statement of comprehensive income — or in two separate, but consecutive, statements of net income and other comprehensive income. The update does not change the items that must be reported in other comprehensive income or when an item of other comprehensive income must be reclassified to net income. ASU No. 2011-05 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011 and should be applied retrospectively. Early adoption is permitted. The Company will be adopting ASU 2011-05 at the beginning of its 2012 fiscal year.

Accounting Policies (Policies)

9 Months Ended

Oct. 01, 2011

The unaudited interim financial information of Kellogg Company (the Company) included in this report reflects normal recurring adjustments that management believes are necessary for a fair statement of the results of operations, financial position, equity and cash flows for the periods presented. This interim information should be read in conjunction with the financial statements and accompanying notes contained on pages 27 to 57 of the Company's 2010 Annual Report on Form 10-K.

The condensed balance sheet data at January 1, 2011 was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States. The results of operations for the quarterly period ended October 1, 2011 are not necessarily indicative of the results to be expected for other interim periods or the full year.

Accounting standards to be adopted in future periods

In September 2011, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2011-08, “Testing Goodwill for Impairment,” allowing entities the option to first assess qualitative factors to determine whether it is necessary to perform the two-step quantitative goodwill impairment test. Under ASU No. 2011-08, an entity would not be required to calculate the fair value of a reporting unit unless the entity determines, based on a qualitative assessment, that it is more likely than not that its fair value is less than its carrying amount. ASU No. 2011-08 is effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011, with early adoption permitted. The Company will consider early adoption of ASU 2011-08 in connection with its annual goodwill impairment evaluation in the fourth quarter of 2011.

In June 2011, the FASB issued ASU No. 2011-05, “Presentation of Comprehensive Income,” requiring most entities to present items of net income and other comprehensive income either in one continuous statement — referred to as the statement of comprehensive income — or in two separate, but consecutive, statements of net income and other comprehensive income. The update does not change the items that must be reported in other comprehensive income or when an item of other comprehensive income must be reclassified to net income. ASU No. 2011-05 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011 and should be applied retrospectively. Early adoption is permitted. The Company will be adopting ASU 2011-05 at the beginning of its 2012 fiscal year.