Customer Contracts - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2019	Jul. 01, 2018	Dec. 30, 2018
Disaggregation of Revenue [Line Items]
Change in estimate	$ 12.6
Contract with customer, current liability	114.5		$ 111.5
Contract with customer, noncurrent liability	19.9		$ 15.3
Revenue recognized from contract liabilities	65.1
Remaining performance obligation	$ 1,697.3
Maximum
Disaggregation of Revenue [Line Items]
Change in estimate		$ 0.1

Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from change in estimate of transaction price which (increases) decreases obligation to transfer good or service to customer for which consideration from customer has been received or is due. Includes, but is not limited to, change in assessment of whether estimate of variable consideration is constrained.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Section 50
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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.

+ References

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-Publisher FASB
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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

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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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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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