Organization and Summary of Significant Accounting Policies - Contract Assets and Liabilities - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 27, 2020	Dec. 29, 2019
Significant Accounting Policies Disclosure [Line Items]
Contract assets, net change	$ (2.4)
Contract liabilities, net change	(0.3)
Revenue recognized	26.2	$ 30.5
Contract assets	177.0	$ 179.4
T for C \| Unbilled
Significant Accounting Policies Disclosure [Line Items]
Contract assets	11.5
International Customer \| Unbilled
Significant Accounting Policies Disclosure [Line Items]
Contract assets	$ 10.0

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130531-203044

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130533-203044

Name:	us-gaap_ContractWithCustomerAssetNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant