Income Taxes (Schedule of Unrecognized Tax Benefit Activity) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 26, 2014	Sep. 27, 2013	Sep. 28, 2012
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of fiscal year	$ 100.1us-gaap_UnrecognizedTaxBenefits	$ 165.5us-gaap_UnrecognizedTaxBenefits	$ 168.4us-gaap_UnrecognizedTaxBenefits
Unrecognized tax benefits retained by Covidien	0	(153.7)	0
Unrecognized tax benefits transferred from Covidien	0	84.2	0
Additions related to current year tax positions	3.2	3.5	1.3
Additions related to prior period tax positions	30.6	6.6	1.6
Reductions related to prior period tax positions	(33.0)	(4.3)	(1.9)
Settlements	(6.9)	(1.6)	(1.7)
Lapse of statute of limitations	(12.0)	(0.1)	(2.2)
Balance at end of fiscal year	82.0us-gaap_UnrecognizedTaxBenefits	100.1us-gaap_UnrecognizedTaxBenefits	165.5us-gaap_UnrecognizedTaxBenefits
Cash advance paid in connection with proposed settlements	0	0	(23.5)
Balance at end of fiscal year, net of cash advance	$ 82.0	$ 100.1	$ 142.0

Unrecognized Tax Benefit, Decrease Resulting from Unrecognized Tax Benefits Retained by Former Parent

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- Definition

Unrecognized Tax Benefit, Increase Resulting from Unrecognized Tax Benefits Transferred from Former Parent

+ References

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- Definition

Unrecognized Tax Benefit, Net of Cash Advance

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Unrecognized Tax Benefits, Cash Advance Paid in Connection with Proposed Settlement, Tax Payment

+ References

No definition available.

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 15A

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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-Name Accounting Standards Codification

-Topic 740

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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-Name Accounting Standards Codification

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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-Subparagraph (a)(4)

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