Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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EQUITY AND LONG-TERM INCENTIVE COMPENSATION - Long Term Incentive Compensation (Details) - USD ($) shares in Thousands, $ in Millions		3 Months Ended		9 Months Ended
	May 14, 2020	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Stock-based Compensation
Related tax benefit		$ 0.9	$ 0.8	$ 2.6	$ 2.5
Performance Shares
Stock-based Compensation
Award vesting period (years)				3 years
Restricted Stock Units (RSUs) \| Non-Employee Director
Stock-based Compensation
Granted (in shares)	28
Performance Stock Units, Stock Options, and Restricted Stock Units
Stock-based Compensation
Compensation expense		$ 3.4	$ 3.3	$ 10.2	$ 10.1