Foundations Retirement Plan	12 Months Ended
Dec. 30, 2017
Defined Contribution Plan [Abstract]
Pension and Other Postretirement Benefits Disclosure [Text Block]	Foundations Retirement Plan The Cerner Corporation Foundations Retirement Plan (the "Plan") was established under Section 401(k) of the Internal Revenue Code. All associates age 18 and older and who are not a member of an excluded class are eligible to participate. Participants may elect to make pre-tax and Roth (post-tax) contributions from 1% to 80% of eligible compensation to the Plan, subject to annual limitations determined by the Internal Revenue Service. Participants may direct contributions into mutual funds, a stable value fund, a Company stock fund, or a self-directed brokerage account. The Plan has a first tier discretionary match that is made on behalf of participants in an amount equal to 33% of the first 6% of the participant’s salary contribution. The Plan's first tier discretionary match expenses amounted to $29 million, $28 million and $30 million for 2017, 2016 and 2015, respectively. The Plan also provides for a second tier matching contribution that is purely discretionary, the payment of which will depend on overall Company performance and other conditions. If approved by the Compensation Committee, contributions by the Company will be tied to attainment of established financial metric goals, such as earnings per share for the year. Participants who defer 2% of their paid base salary, are actively employed as of the last day of the Plan year and are employed before October 1st of the Plan year are eligible to receive the second tier discretionary match contribution, if any such second tier matching contribution is approved by the Compensation Committee. For the years ended 2016 and 2015 we expensed $8 million and $7 million for the second tier discretionary distributions, respectively.

Foundations Retirement Plan

The Cerner Corporation Foundations Retirement Plan (the "Plan") was established under Section 401(k) of the Internal Revenue Code. All associates age 18 and older and who are not a member of an excluded class are eligible to participate. Participants may elect to make pre-tax and Roth (post-tax) contributions from 1% to 80% of eligible compensation to the Plan, subject to annual limitations determined by the Internal Revenue Service. Participants may direct contributions into mutual funds, a stable value fund, a Company stock fund, or a self-directed brokerage account. The Plan has a first tier discretionary match that is made on behalf of participants in an amount equal to 33% of the first 6% of the participant’s salary contribution. The Plan's first tier discretionary match expenses amounted to $29 million, $28 million and $30 million for 2017, 2016 and 2015, respectively.

The Plan also provides for a second tier matching contribution that is purely discretionary, the payment of which will depend on overall Company performance and other conditions. If approved by the Compensation Committee, contributions by the Company will be tied to attainment of established financial metric goals, such as earnings per share for the year. Participants who defer 2% of their paid base salary, are actively employed as of the last day of the Plan year and are employed before October 1st of the Plan year are eligible to receive the second tier discretionary match contribution, if any such second tier matching contribution is approved by the Compensation Committee. For the years ended 2016 and 2015 we expensed $8 million and $7 million for the second tier discretionary distributions, respectively.