Restructuring and Related Charges (Narrative) (Detail) (2013 Mallinckrodt program, USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
Mar. 28, 2014	Sep. 27, 2013
Minimum
Restructuring Cost and Reserve [Line Items]
2013 Mallinckrodt program expected cost range	$ 100.0	$ 100.0
Maximum
Restructuring Cost and Reserve [Line Items]
2013 Mallinckrodt program expected cost range	$ 125.0	$ 125.0

Amount expected to be recognized in earnings for the specified restructuring cost.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB Topic 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration