Composition of Certain Financial Statement Items Other Income, Costs and Expenses (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Mar. 29, 2015	Mar. 27, 2016	Mar. 29, 2015
Gain on sale of wireless spectrum		$ 380.0	$ 0.0
Proceeds from sale of wireless spectrum		232.0	0.0
Deferred payments		275.0
Restructuring and restructuring-related charges		129.0
Gain on sale of business		48.0
Resolution of governmental investigation, Amount	$ 975.0	$ 7.5
Goodwill impairment charges			104.0
Gain on sale of certain property, plant and equipment			$ 16.0
Minimum [Member]
Deferred payments, Due date		Jan. 01, 2020
Maximum [Member]
Deferred payments, Due date		Dec. 31, 2023

Amount of fine imposed by a government agency on resolution of matters investigated.

No definition available.

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- Definition

Amount of gain (loss) on sale or disposal of intangible assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7,9)
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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment.

+ References

No definition available.

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
-Paragraph 28
-Subparagraph (b)
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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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-Paragraph 2
-Subparagraph (b)
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- Definition

Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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-Paragraph 1
-Subparagraph (SX 210.9-03.10(3))
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The cash inflow from disposal of asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Glossary Investing Activities
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- Definition

Date the receivable or note with imputed interest is due, in CCYY-MM-DD format.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

+ References

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