Employee Benefit Plans (Supplemental Executive Retirement Plan) (Details) - Supplemental Employee Retirement Plans, Defined Benefit [Member] - USD ($) $ in Millions	12 Months Ended
Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 22.1	$ 23.7
Fair value of plan assets	1.8	1.4
Pension expense	$ (0.3)	$ 3.2	$ 1.6

Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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+ References

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References

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Amount of cost (reversal of cost) for pension benefits. Excludes other postretirement benefits.

+ References

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