Related Party Transactions Related Parties (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2013
Related Party Transaction [Line Items]
Estimated Incentives	$ 82.0
Kansas Unified Development and OnGoal [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Description of Transaction	The stadium complex was developed by Kansas Unified Development, LLC (the “Developer”), an entity controlled by Neal Patterson, Chairman of the Board of Directors and Chief Executive Officer of the Company, and Clifford Illig, Vice Chairman of the Board of Directors of the Company. Sporting Kansas City (“Sporting KC”) is the principal tenant of the stadium complex. OnGoal LLC (“OnGoal”), the owner of the Sporting KC professional soccer club, is also controlled by Messrs. Patterson and Illig
Grand Construction [Member] | Continuous Campus [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Description of Transaction	In 2012, we contracted with GRAND Construction, LLC (“Coordinator”), a limited liability company owned in part by an entity controlled by Messrs. Patterson and Illig, to coordinate, supervise, schedule and assist with managing the development, design and construction of our Continuous Campus
Related Party Transaction, Amounts of Transaction	1.4
Grand Construction [Member] | Parking Improvements [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Description of Transaction	separate projects to make improvements to parking facilities utilized by one of our other office campuses
Related Party Transaction, Amounts of Transaction	0.3
Trails [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Description of Transaction	In December 2013, we purchased approximately 237 acres of land located in Kansas City, Missouri, from Trails Properties II, Inc. (“Trails”)
Related Party Transaction, Amounts of Transaction	42.5
Cash Grant [Member]
Related Party Transaction [Line Items]
Estimated Incentives	48.0
Sales Tax Exemptions [Member]
Related Party Transaction [Line Items]
Estimated Incentives	13.0
State Income Tax Credits [Member]
Related Party Transaction [Line Items]
Estimated Incentives	17.0
Land Received [Member]
Related Party Transaction [Line Items]
Estimated Incentives	$ 4.0
Success Payment [Member]
Related Party Transaction [Line Items]
Gain Contingency, Description	Under a separate agreement, the Developer and OnGoal have agreed to be responsible for certain shortfall payments that may become due. If no payment from Developer or OnGoal becomes due at the end of the 10-year period, the Developer or OnGoal will pay us a success fee of $4.0 million
Cash Grant [Member]
Related Party Transaction [Line Items]
Gain Contingency, Description	Should aggregate state payroll tax withholdings (related to associates at our Continuous Campus) over a 10-year period commencing in January 2014 be less than $51.9 million (the $48.0 million of cash we received plus amounts representing debt service costs incurred by the State of Kansas), we would be required to repay the shortfall. The $51.9 million maximum repayment amount will be adjusted up or down during the 10-year period, based on any future change to Kansas payroll tax withholding rates