Performance Shares Award, Performance Period

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- Definition

Performance Shares, Percentage of Ordinary Shares Awarded

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

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- Definition

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

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.

+ References

No definition available.

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Share Plans (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended		12 Months Ended
	Dec. 30, 2022	Jun. 16, 2022	Dec. 30, 2022	Dec. 31, 2021	Dec. 25, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation cost	$ 1.4	$ 1.7		$ 10.2	$ 25.3
Tax benefit from share-based compensation cost	0.0	$ 0.0		$ 0.0	$ 0.0
Shares authorized under 2013 Plan		1,800,000
Share Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period			4 years
Expiration period			10 years
Restricted Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average period to recognize unrecognized compensation cost, share options			2 years 2 months 12 days
Unrecognized compensation cost, restricted share units	$ 9.4		$ 9.4
Performance Shares Award, Performance Period			3 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value, granted restricted share units	$ 2.51
Weighted-average period to recognize unrecognized compensation cost, share options			1 year 10 months 24 days
Unrecognized compensation cost, restricted share units	$ 1.7		$ 1.7
Performance Shares \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value, granted restricted share units	$ 8.34
Unrecognized compensation cost, restricted share units	$ 5.5		$ 5.5
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of ordinary shares to be awarded			0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of ordinary shares to be awarded			200.00%