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Contingencies - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 30, 2018
Loss Contingencies [Line Items]
Accrual for litigation costs	$ 11.6	$ 12.8
Loss contingency, estimate of possible loss	10.0
Minimum
Loss Contingencies [Line Items]
Loss contingency, portion not accrued	0.2
Maximum
Loss Contingencies [Line Items]
Loss contingency, portion not accrued	2.3
Prepaid Expenses and Other Current Assets
Loss Contingencies [Line Items]
Insurance recoveries	$ 4.6	$ 6.1

X

- Definition

Carrying amount as of the balance sheet date of amounts expected to be recovered under the terms of insurance contracts.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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

Amount of loss contingency liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
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- Definition

The difference between the maximum amount of estimated loss and the amount recorded as of the balance sheet date.

+ References

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-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
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