Restructuring and Divestiture Charges - Charges Taken Related to Restructuring Actions (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended
Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Sep. 29, 2012 Fiscal 2012 Charges [Member] Restructuring [Member]	Sep. 28, 2013 Fiscal 2013 Charges [Member] Restructuring [Member]	Jun. 28, 2014 Fiscal 2014 Charges [Member] Restructuring [Member]	Sep. 29, 2012 Consolidation of Diagnostics Operations [Member] Fiscal 2012 Charges [Member] Restructuring [Member]	Sep. 28, 2013 Consolidation of Diagnostics Operations [Member] Fiscal 2013 Charges [Member] Restructuring [Member]	Jun. 28, 2014 Consolidation of Diagnostics Operations [Member] Fiscal 2014 Charges [Member] Restructuring [Member]	Sep. 29, 2012 Closure of Indianapolis Facility [Member] Fiscal 2012 Charges [Member] Restructuring [Member]	Sep. 28, 2013 Closure of Indianapolis Facility [Member] Fiscal 2013 Charges [Member] Restructuring [Member]	Jun. 28, 2014 Closure of Indianapolis Facility [Member] Fiscal 2014 Charges [Member] Restructuring [Member]	Sep. 29, 2012 Fiscal 2014 Actions [Member] Fiscal 2012 Charges [Member] Restructuring [Member]	Sep. 28, 2013 Fiscal 2014 Actions [Member] Fiscal 2013 Charges [Member] Restructuring [Member]	Jun. 28, 2014 Fiscal 2014 Actions [Member] Fiscal 2014 Charges [Member] Restructuring [Member]	Sep. 29, 2012 Fiscal 2013 Actions [Member] Fiscal 2012 Charges [Member] Restructuring [Member]	Sep. 28, 2013 Fiscal 2013 Actions [Member] Fiscal 2013 Charges [Member] Restructuring [Member]	Jun. 28, 2014 Fiscal 2013 Actions [Member] Fiscal 2014 Charges [Member] Restructuring [Member]	Sep. 29, 2012 Other Operating Cost Reductions [Member] Fiscal 2012 Charges [Member] Restructuring [Member]	Sep. 28, 2013 Other Operating Cost Reductions [Member] Fiscal 2013 Charges [Member] Restructuring [Member]	Jun. 28, 2014 Other Operating Cost Reductions [Member] Fiscal 2014 Charges [Member] Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment charges			$ 33.3	$ 1.8	$ 0.6		$ 3.1	$ 0.6		$ 0	$ 0		$ 0	$ 0		$ 0	$ 0		$ 0	$ 0		$ 3.1
Purchase orders and other contractual obligations					0.3			0			0			0			0			0.3
Workforce reductions					15.3	31.2	32.7	14.2	14.0	2.3	0.9	4.8	0.2	0	0	21.0	0	11.3	0.9	0.2	1.1	8.3
Facility closure costs					0.4	0.6	0.5	0	0	0	0	0.2	0.5	0	0	0	0	0	0	0.4	0.4	0
Other					0.9	0.9	0.1	0	0	0	0.9	0.7	0	0	0	0	0	0	0	0	0.2	0.1
Fiscal restructuring charges					17.5	32.7	36.4	14.8	14.0	2.3	1.8	5.7	0.7	0	0	21.0	0	11.3	0.9	0.9	1.7	11.5
Divestiture net charges						0.1	0.2
Fiscal restructuring and divestiture charges	$ 6.7	$ 6.7	$ 36.6	$ 23.1	$ 17.5	$ 32.8	$ 36.6	$ 14.8			$ 1.8			$ 0			$ 0			$ 0.9

Divestiture charges, net.

No definition available.

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- Definition

Represents charges incurred to close or restructure a facility in connection with an exit or disposal activity. Such costs include clean-up costs and lease obligations. Costs are recorded as the activities are incurred except for lease obligation charges, which are recorded upon termination of the lease obligation or at the cease use date.

+ References

No definition available.

+ Details

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- Definition

Charges in the period for purchase orders and other contractual obligations related to exit or disposal activities that the Company is required to pay.

+ References

No definition available.

+ Details

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- Definition

Represents severance and related benefit charges for the termination of employees under an exit or disposal activity. Charges are recorded either as one-time termination benefits, which are recognized ratable over the required service period to receive such benefit, or under an ongoing benefit plan arrangement once the charge is probable and reasonably estimable.

+ References

No definition available.

+ Details

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- Definition

Total restructuring charges under exit or disposal plan.

+ References

No definition available.

+ Details

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

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- Definition

Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: 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 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

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 5.P.3)

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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