Income Taxes - Federal and Foreign Tax Operating Loss Carry-Forwards Expiring (Detail) $ in Millions	Dec. 27, 2019 USD ($)
Income Tax Disclosure [Abstract]
2019	$ 19.5
2020	21.5
2021	25.3
2022	8.5
2024 and beyond	18.4
No expiration	1,107.4
Federal and foreign tax operating loss carry-forwards	$ 1,200.6

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319

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