Interim Statement Presentation (Notes)	6 Months Ended
Jun. 29, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interim Statement Presentation	Interim Statement Presentation The condensed consolidated financial statements included herein have been prepared by Cerner Corporation (we or the Company) without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) have been condensed or omitted pursuant to such rules and regulations. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in our latest annual report on Form 10-K. In management’s opinion, the accompanying unaudited condensed consolidated financial statements include all adjustments (consisting of only normal recurring adjustments) necessary to present fairly the financial position and the results of operations and cash flows for the periods presented. Our interim results as presented in this Form 10-Q are not necessarily indicative of the operating results for the entire year. The condensed consolidated financial statements were prepared using GAAP. These principles require us to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities and the reported amounts of revenues and expenses. Actual results could differ from those estimates. Our second fiscal quarter ends on the Saturday closest to June 30. The 2013 and 2012 second quarters ended on June 29, 2013 and June 30, 2012, respectively. All references to years in these notes to condensed consolidated financial statements represent the respective three or six months ended on such dates, unless otherwise noted. Stock Split On May 24, 2013, the Board of Directors of the Company approved a two-for-one split of our common stock in the form of a one hundred percent (100%) stock dividend, which was distributed on or about June 28, 2013 to shareholders of record as of June 17, 2013. In connection with the stock split, 1.5 million treasury shares (pre-split), which represents the amount held in treasury on June 28, 2013, were utilized to settle a portion of the distribution. All share and per share data have been retroactively adjusted for all periods presented to reflect the stock split including the use of treasury shares, as if the stock split had occurred at the beginning of the earliest period presented. Under the terms of our outstanding equity awards, the stock split increased the number of shares of our common stock issuable upon exercise or vesting of such awards in proportion to the stock split ratio and caused a proportionate decrease in the exercise price of such awards to the extent they were stock options. Recently Adopted Accounting Pronouncements Comprehensive Income. In the first quarter of 2013, we adopted Financial Accounting Standards Board Accounting Standards Update (ASU) No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income (AOCI). ASU 2013-02 requires an entity to disclose, either in a single note or parenthetically on the face of the financial statements, the effect of significant amounts reclassified from each component of AOCI into net income and the income statement line items affected by the reclassification. If a component is not required to be reclassified to net income in its entirety, an entity would instead cross reference to the related footnote for additional information. The adoption of this standard did not impact disclosures in these condensed consolidated financial statements, as AOCI reclassification amounts are not material to the Company.

Interim Statement Presentation

The condensed consolidated financial statements included herein have been prepared by Cerner Corporation (we or the Company) without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) have been condensed or omitted pursuant to such rules and regulations. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in our latest annual report on Form 10-K.

In management’s opinion, the accompanying unaudited condensed consolidated financial statements include all adjustments (consisting of only normal recurring adjustments) necessary to present fairly the financial position and the results of operations and cash flows for the periods presented. Our interim results as presented in this Form 10-Q are not necessarily indicative of the operating results for the entire year.

The condensed consolidated financial statements were prepared using GAAP. These principles require us to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities and the reported amounts of revenues and expenses. Actual results could differ from those estimates.

Our second fiscal quarter ends on the Saturday closest to June 30. The 2013 and 2012 second quarters ended on June 29, 2013 and June 30, 2012, respectively. All references to years in these notes to condensed consolidated financial statements represent the respective three or six months ended on such dates, unless otherwise noted.

Stock Split

On May 24, 2013, the Board of Directors of the Company approved a two-for-one split of our common stock in the form of a one hundred percent (100%) stock dividend, which was distributed on or about June 28, 2013 to shareholders of record as of June 17, 2013. In connection with the stock split, 1.5 million treasury shares (pre-split), which represents the amount held in treasury on June 28, 2013, were utilized to settle a portion of the distribution. All share and per share data have been retroactively adjusted for all periods presented to reflect the stock split including the use of treasury shares, as if the stock split had occurred at the beginning of the earliest period presented.

Under the terms of our outstanding equity awards, the stock split increased the number of shares of our common stock issuable upon exercise or vesting of such awards in proportion to the stock split ratio and caused a proportionate decrease in the exercise price of such awards to the extent they were stock options.

Recently Adopted Accounting Pronouncements

Comprehensive Income. In the first quarter of 2013, we adopted Financial Accounting Standards Board Accounting Standards Update (ASU) No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income (AOCI). ASU 2013-02 requires an entity to disclose, either in a single note or parenthetically on the face of the financial statements, the effect of significant amounts reclassified from each component of AOCI into net income and the income statement line items affected by the reclassification. If a component is not required to be reclassified to net income in its entirety, an entity would instead cross reference to the related footnote for additional information. The adoption of this standard did not impact disclosures in these condensed consolidated financial statements, as AOCI reclassification amounts are not material to the Company.