Financial Instruments - Production Financing Loans (Details) - USD ($) $ in Millions	Sep. 26, 2021	Dec. 27, 2020	Sep. 27, 2020
Debt Disclosure [Abstract]
Production financing held by production subsidiaries	$ 204.7	$ 165.5	$ 121.4
Other loans	0.0	5.4	9.0
Total	204.7	170.9	130.4
Non-current	47.0	62.9	82.2
Current	157.7	102.6	39.2
Total	$ 204.7	$ 165.5	$ 121.4

Amount of long-term loans classified as other, payable within one year or the operating cycle, if longer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Name:	us-gaap_OtherLoansPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant