Johnson Controls International (JCI) 10-Q 24 Apr 15 2015 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Mar. 27, 2015	Apr. 17, 2015
Document and Entity Information
Entity Registrant Name	TYCO INTERNATIONAL PLC
Entity Central Index Key	833444
Document Type	10-Q
Document Period End Date	27-Mar-15
Amendment Flag	FALSE
Current Fiscal Year End Date	-16
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		421,032,334
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) (USD $)	3 Months Ended				6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 27, 2015		Mar. 28, 2014		Mar. 27, 2015		Mar. 28, 2014
Income Statement [Abstract]
Revenue from product sales	$1,458		$1,464		$2,946		$2,930
Service revenue	972		1,016		1,962		2,039
Net revenue	2,430	[1]	2,480	[1]	4,908	[1]	4,969	[1]
Cost of product sales	999		1,003		2,021		2,001
Cost of services	550		575		1,097		1,150
Selling, general and administrative expenses	648		635		1,300		1,205
Separation Transaction Costs	0		1		0		1
Restructuring and asset impairment charges, net	12		7		70		10
Operating income	221		259		420		602
Interest income	4		3		7		6
Interest expense	-25		-25		-49		-49
Other (expense) income, net	-1		-1		3		-2
Income from continuing operations before income taxes	199		236		381		557
Income tax expense	-18		-39		-37		-109
Equity loss in earnings of unconsolidated subsidiaries	0		-5		0		-9
Income from continuing operations	181		192		344		439
(Loss) income from discontinued operations, net of income taxes	-16		15		-18		40
Net income	165		207		326		479
Less: noncontrolling interest in subsidiaries net (loss) income	-2		0		-3		2
Net income attributable to Tyco ordinary shareholders	167		207		329		477
Amounts attributable to Tyco ordinary shareholders:
Income from continuing operations	183		192		347		437
(Loss) income from discontinued operations	-16		15		-18		40
Net income attributable to Tyco ordinary shareholders	$167		$207		$329		$477
Basic earnings per share attributable to Tyco ordinary shareholders:
Income from continuing operations (in dollars per share)	$0.44		$0.41		$0.83		$0.94
Income from discontinued operations (in dollars per share)	($0.04)		$0.04		($0.05)		$0.09
Net income attributable to Tyco common shareholders (in dollars per share)	$0.40		$0.45		$0.78		$1.03
Diluted earnings per share attributable to Tyco ordinary shareholders:
Income from continuing operations (in dollars per share)	$0.43		$0.41		$0.81		$0.93
Income from discontinued operations (in dollars per share)	($0.04)		$0.03		($0.04)		$0.08
Net income attributable to Tyco common shareholders (in dollars per share)	$0.39		$0.44		$0.77		$1.01
Weighted average number of shares outstanding:
Basic (in shares)	420		461		420		462
Diluted (in shares)	427		469		427		470
[1]	Net revenue by operating segment excludes intercompany transactions.

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015	Mar. 28, 2014	Mar. 27, 2015	Mar. 28, 2014
Statement of Comprehensive Income [Abstract]
Net income	$165	$207	$326	$479
Other comprehensive loss, net of tax
Foreign currency translation	-176	-15	-374	-52
Defined benefit and post retirement plans	4	4	9	7
Total other comprehensive loss, net of tax	-172	-11	-365	-45
Comprehensive income (loss)	-7	196	-39	434
Less: comprehensive (loss) income attributable to noncontrolling interests	-2	0	-3	2
Comprehensive income (loss) attributable to Tyco ordinary shareholders	($5)	$196	($36)	$432

CONSOLIDATED_BALANCE_SHEETS_UN

CONSOLIDATED BALANCE SHEETS (UNAUDITED) (USD $)	Mar. 27, 2015	Sep. 26, 2014
In Millions, unless otherwise specified
Current Assets:
Cash and cash equivalents	$432	$892
Accounts receivable, less allowance for doubtful accounts of $74 and $73, respectively	1,643	1,734
Inventories	677	625
Prepaid expenses and other current assets	867	1,051
Deferred income taxes	304	304
Assets held for sale	155	180
Total Current Assets	4,078	4,786
Property, plant and equipment, net	1,216	1,262
Goodwill	4,265	4,122
Intangible assets, net	908	712
Other assets	1,228	927
Total Assets	11,695	11,809
Current Liabilities:
Loans payable and current maturities of long-term debt	278	20
Accounts payable	735	825
Accrued and other current liabilities	1,959	2,114
Deferred revenue	405	400
Liabilities held for sale	102	118
Total Current Liabilities	3,479	3,477
Long-term debt	1,732	1,443
Deferred revenue	315	335
Other liabilities	1,927	1,871
Total Liabilities	7,453	7,126
Commitments and Contingencies (see Note 11)
Redeemable noncontrolling interest in businesses held for sale	12	13
Tyco Shareholders' Equity:
Ordinary shares, $0.01 and CHF 0.50 par value, 1,000,000,000 and 825,222,070 shares authorized, and 420,872,396 and 486,363,050 shares issued as March 27, 2015 and September 26, 2014, respectively	4	208
Preference shares $0.01 par value, 100,000,000 shares authorized, none outstanding as of March 27, 2015	0	0
Ordinary shares held in treasury, nil and 59,460,486 shares as of March 27, 2015 and September 26, 2014, respectively	0	-2,515
Additional paid in capital	565	3,306
Accumulated earnings	5,202	4,873
Accumulated other comprehensive loss	-1,590	-1,225
Total Tyco Shareholders' Equity	4,181	4,647
Nonredeemable noncontrolling interest	49	23
Total Equity	4,230	4,670
Total Liabilities, Redeemable Noncontrolling Interest and Equity	$11,695	$11,809

CONSOLIDATED_BALANCE_SHEETS_UN1

CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical)	Mar. 27, 2015	Sep. 26, 2014	Sep. 26, 2014
In Millions, except Share data, unless otherwise specified	USD ($)	USD ($)	CHF
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$77	$75
Common Stock, Par or Stated Value Per Share (usd per share)	$0.01
Ordinary shares, par value ($ FY15, CHF FY14)			0.5
Ordinary shares, shares authorized	1,000,000,000	825,222,070	825,222,070
Ordinary shares, shares issued	419,829,278	486,363,050	486,363,050
Ordinary shares held in treasury, shares	0	59,460,486	59,460,486
Preferred Stock, Par or Stated Value Per Share (usd per share)	$0.01	$0
Preferred Stock, Shares Authorized	100,000,000	0	0
Preferred Stock, Shares Issued	0

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015	Mar. 28, 2014
Cash Flows From Operating Activities:
Net income attributable to Tyco ordinary shareholders	$329	$477
Noncontrolling interest in subsidiaries net (loss) income	-3	2
Income (loss) from discontinued operations, net of income taxes	18	-40
Income from continuing operations	344	439
Adjustments to reconcile net cash provided by operating activities:
Depreciation and amortization	171	180
Non-cash compensation expense	30	31
Deferred income taxes	-29	56
Provision for losses on accounts receivable and inventory	34	23
Legacy legal matters (see Note 11)	0	-92
Other non-cash items	23	17
Changes in assets and liabilities, net of the effects of acquisitions and divestitures:
Accounts receivable, net	22	36
Contracts in progress	-30	-5
Inventories	-64	-24
Prepaid expenses and other assets	-44	-40
Accounts payable	-87	-48
Accrued and other liabilities	-64	-220
Deferred revenue	4	11
Other	-48	2
Net cash provided by operating activities	262	366
Net cash provided by discontinued operating activities	3	77
Cash Flows From Investing Activities:
Capital expenditures	-123	-135
Proceeds from disposal of assets	3	6
Acquisition of businesses, net of cash acquired	-525	-54
Acquisition of dealer generated customer accounts and bulk account purchases	-8	-16
Proceeds from Divestiture of Businesses, Net of Cash Divested	-1	0
Sales and maturities of investments	279	141
Purchases of investments	-288	-40
Increase (Decrease) in Restricted Cash	-39	6
Other	-1	0
Net cash used in investing activities	-703	-92
Net cash used in discontinued investing activities	-15	-57
Effect of currency translation on cash	-16	-16
Net decrease in cash and cash equivalents	-460	-68
Cash and cash equivalents at beginning of period	892	563
Cash Flows From Financing Activities:
Proceeds from issuance of short-term debt	0	715
Repayment of short-term debt	-1	-715
Proceeds from Issuance of Long-term Debt	567	0
Proceeds from exercise of share options	57	62
Dividends paid	-151	-148
Repurchase of ordinary shares	-417	-250
Transfer (to) from discontinued operations	-12	20
Payment of contingent consideration	-23	0
Other	-23	-10
Net cash used in financing activities	-3	-326
Net cash provided by (used in) discontinued financing activities	12	-20
Cash and cash equivalents at end of period	$432	$495

CONSOLIDATED_STATEMENTS_OF_SHA

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) (USD $)	Total	Total Tyco Shareholders' Equity	Common Shares	Treasury Shares	Additional Paid in Capital	Accumulated Earnings	Accumulated Other Comprehensive Loss	Nonredeemable Noncontrolling Interest
In Millions, unless otherwise specified
Balance at Sep. 27, 2013	$5,121	$5,098	$208	($912)	$3,754	$3,035	($987)	$23
Balance (in shares) at Sep. 27, 2013			463
Comprehensive income:
Net income attributable to Tyco ordinary shareholders	479	477				477		2
Other comprehensive loss, net of tax	-45	-45					-45
Dividends declared	-332	-332			-332
Shares issued from treasury for vesting of share based equity awards (in shares)			5
Shares issued from treasury for vesting of share based equity awards	62	62		182	-120
Repurchase of common shares (in shares)			-7
Repurchase of ordinary shares	-250	-250		-250
Compensation expense	32	32			32
Other	-11	-11		-11
Balance at Mar. 28, 2014	5,056	5,031	208	-991	3,334	3,512	-1,032	25
Balance (in shares) at Mar. 28, 2014			461
Balance at Sep. 26, 2014	4,670	4,647	208	-2,515	3,306	4,873	-1,225	23
Balance (in shares) at Sep. 26, 2014			427
Comprehensive income:
Net income attributable to Tyco ordinary shareholders	326	329				329		-3
Other comprehensive loss, net of tax	-365	-365					-365
Cancellation of treasury shares	0	0	-34	2,878	-2,844
Dividends declared	-84	-84			-84
Conversion of Tyco International Ltd. common shares to Tyco International plc ordinary shares			-170		170
Shares issued for vesting of share based equity awards (in shares)			4
Shares issued for vesting of share based equity awards	57	57		67	-10
Repurchase of common shares (in shares)			-10
Repurchase of ordinary shares	-417	-417		-417
Compensation expense	30	30			30
Noncontrolling interest related to acquisitions	29	0						29
Other	-16	-16		-13	-3
Balance at Mar. 27, 2015	$4,230	$4,181	$4	$0	$565	$5,202	($1,590)	$49
Balance (in shares) at Mar. 27, 2015			421

Basis_of_Presentation_and_Summ

Basis of Presentation and Summary of Significant Accounting Policies	6 Months Ended
	Mar. 27, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Basis of Presentation and Summary of Significant Accounting Policies
	Basis of Presentation—The Consolidated Financial Statements included herein are unaudited, but in the opinion of management, such financial statements include all adjustments, consisting of normal recurring adjustments, necessary to summarize fairly the Company's financial position, results of operations and cash flows for the interim period. The unaudited Consolidated Financial Statements include the consolidated results of Tyco International plc, a corporation organized under the laws of Ireland, and its subsidiaries (Tyco and all its subsidiaries, hereinafter collectively referred to as the "Company" or "Tyco"). The unaudited Consolidated Financial Statements have been prepared in United States dollars ("USD") and in accordance with the instructions to Form 10-Q under the Securities and Exchange Act of 1934, as amended. The results reported in these unaudited Consolidated Financial Statements should not be taken as indicative of results that may be expected for the entire year. These financial statements should be read in conjunction with the Consolidated Financial Statements and accompanying notes contained in the Company's Annual Report on Form 10-K for the fiscal year ended September 26, 2014 (the "2014 Form 10-K").
	References to 2015 and 2014 are to Tyco's fiscal quarters ending March 27, 2015 and March 28, 2014, respectively, unless otherwise indicated. The Company has a 52 or 53-week fiscal year that ends on the last Friday in September. Fiscal years 2015 and 2014 are both 52-week years.
	Change of Jurisdiction - On November 17, 2014, Tyco International Ltd., an entity organized under the laws of Switzerland ("Tyco Switzerland"), completed its change of jurisdiction of incorporation from Switzerland to Ireland by merging with its subsidiary, Tyco International plc ("Tyco Ireland"), a public limited company incorporated under the laws of Ireland (the "Merger"). As a result of the Merger, Tyco Ireland is the successor issuer to Tyco Switzerland, has succeeded to the attributes of Tyco Switzerland as the registrant under SEC regulations, and has assumed all pre-Merger obligations of Tyco Switzerland.
	Reclassifications - Certain prior period amounts have been reclassified to conform with current period presentation. The Company has reclassified several businesses in the Rest of World ("ROW") Installation & Services segment to (Loss) income from discontinued operations in the Consolidated Statements of Operations and the assets and liabilities as held for sale within the Consolidated Balance Sheets for all periods presented as they satisfied the criteria to be presented as discontinued operations. In addition, the Company has reclassified the assets and liabilities of several businesses in the ROW Installation & Services segment as held for sale during the quarter ended March 27, 2015. One of these businesses satisfied the criteria to be presented as discontinued operations and has been reflected as such in the Consolidated Statements of Operations for all periods presented. See Note 3.
	Recently Adopted Accounting Pronouncements - In March 2013, the Financial Accounting Standards Board ("FASB") issued authoritative guidance to resolve diversity in practice on the accounting for the cumulative translation adjustment ("CTA") when a parent either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets within a foreign entity. The guidance requires that the parent release any CTA into net income when the parent ceases to have a controlling financial interest in a subsidiary or group of assets within a foreign entity which results in a substantially complete liquidation of the foreign entity; when the sale of an investment in a foreign entity results in the loss of a controlling financial interest; or where an acquirer obtains control of an acquiree in which it had an equity interest immediately before the acquisition date. The guidance does not change the requirement to release a pro rata portion of the CTA into net income upon a partial sale of an equity method investment that is a foreign entity. The guidance became effective for Tyco in the first quarter of fiscal 2015. The adoption of this guidance, which was applied on a prospective basis, did not have a material impact on the Company's financial position, results of operations or cash flows.
	In July 2013, the FASB issued authoritative guidance for the presentation of an unrecognized tax benefit when a net operating loss (“NOL”) carryforward, a similar tax loss, or a tax credit carryforward exists. The guidance requires an entity to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in the financial statements as a reduction to a deferred tax asset for a NOL carryforward, a similar tax loss, or a tax credit carryforward. If the NOL carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the jurisdiction or the tax law of the jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit will be presented in the financial statements as a liability and will not be combined with deferred tax assets. This guidance does not require any additional recurring disclosures and became effective for Tyco during the first fiscal quarter of fiscal 2015. The adoption of this guidance, which was applied on a prospective basis, did not have a material impact on the Company's financial position, results of operations or cash flows.
	Recently Issued Accounting Pronouncements - In April 2014, the FASB issued authoritative guidance to change the criteria for reporting discontinued operations. Under the new guidance, only disposals representing a strategic shift in a company's operations and financial results should be reported as discontinued operations, with expanded disclosures. In addition, disclosure of the pre-tax income attributable to a disposal of a significant part of an organization that does not qualify as a discontinued operation is required. This guidance is effective for Tyco in the first quarter of fiscal 2016, with early adoption permitted only for disposals that have not been reported in financial statements previously issued or available for issuance. The Company is currently assessing the impact, if any, the guidance will have upon adoption.
	In May 2014, the FASB issued authoritative guidance for revenue from contracts with customers, which provides a single comprehensive revenue recognition model to apply in determining how and when to recognize revenue. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. When applying the new revenue model to contracts with customers the guidance requires five steps to be applied, which include: 1) identify the contract(s) with a customer, 2) identify the performance obligations in the contract, 3) determine the transaction price, 4) allocate the transaction price to the performance obligations in the contract and 5) recognize revenue when (or as) the entity satisfies a performance obligation. The guidance also requires both quantitative and qualitative disclosures, which are more comprehensive than existing revenue standards. The disclosures are intended to enable financial statement users to understand the nature, timing and uncertainty of revenue and the related cash flow. This guidance will be effective for Tyco in the first quarter of fiscal 2018, with early adoption not permitted. The Company is currently assessing the impact the guidance will have upon adoption.

2012_Separation_Transaction

2012 Separation Transaction	6 Months Ended
	Mar. 27, 2015
Extraordinary and Unusual Items [Abstract]
2012 Separation Transaction	2012 Separation Transaction
	On September 28, 2012, the Company completed the spin-offs of The ADT Corporation ("ADT") and Pentair Ltd. (formerly known as Tyco Flow Control International Ltd. ("Tyco Flow Control")), formerly the North American residential security and flow control businesses of Tyco, respectively, into separate, publicly traded companies in the form of a distribution to Tyco shareholders ("2012 Separation").
	In connection with activities taken to complete the 2012 Separation and to create the revised organizational structure of the Company, the Company incurred pre-tax charges ("Separation Charges") within continuing operations of nil and $16 million during the quarters ended March 27, 2015 and March 28, 2014, respectively, and $2 million and $31 million for the six months ended March 27, 2015 and March 28, 2014, respectively. In addition, the Company incurred pre-tax charges within discontinued operations of nil and $1 million for both the quarters and six months ended March 27, 2015 and March 28, 2014, respectively. The amounts presented within discontinued operations are costs directly related to the 2012 Separation that are not expected to provide a future benefit to the Company. The Company received associated tax benefits of nil and $5 million during the quarters ended March 27, 2015 and March 28, 2014, respectively, and $1 million and $11 million for the six months ended March 27, 2015 and March 28, 2014, respectively. The Company does not expect to incur material separation charges relating to activities taken to complete the 2012 Separation in future periods.

Divestitures

Divestitures	6 Months Ended
	Mar. 27, 2015
Discontinued Operations and Disposal Groups [Abstract]
Divestitures	Divestitures
	The Company continually assesses the strategic fit of its various businesses and from time to time divests businesses which do not align with its long-term strategy.
	During the quarter ended March 27, 2015, the Company concluded that several businesses in the ROW Installation & Services segment which it intends to sell met the criteria to be classified as held for sale. The Company expects to complete the sale of these businesses during the remainder of fiscal 2015. In addition, during fiscal 2014, the Company concluded that several other businesses in the ROW Installation & Services segment which it intends to sell met the criteria to be classified as held for sale. The Company expects to complete the sale of these businesses by the end of the third quarter of fiscal 2015.
	The businesses described above are accounted for as held for sale on the Consolidated Balance Sheets as of March 27, 2015 and September 26, 2014. To the extent the criteria required to be presented as a discontinued operation have been satisfied, the businesses results of operations have been presented as such on the Consolidated Statements of Operations during the quarters and six months ended March 27, 2015 and March 28, 2014.
	Discontinued Operations
	The components of (loss) income from discontinued operations, net of income taxes are as follows ($ in millions):
		For the Quarters Ended						For the Six Months Ended
		27-Mar-15			28-Mar-14			27-Mar-15			28-Mar-14
	Net revenue	$	5		$	152		$	10		$	310
	Pre-tax (loss) income from discontinued operations	(6		)	20			(9		)	52
	Pre-tax separation loss included within discontinued operations (See Note 2)	—			(1		)	—			(1		)
	Pre-tax (loss) gain on sale of discontinued operations	—			(4		)	1			(4		)
	Income tax expense	(10		)	—			(10		)	(7		)
	(Loss) income from discontinued operations, net of income taxes	$	(16	)	$	15		$	(18	)	$	40
	Balance sheet information for the discontinued operations as of March 27, 2015 and September 26, 2014 was as follows ($ in millions):
		As of
		27-Mar-15			26-Sep-14
	Accounts receivable, net	$	20		$	26
	Inventories	6			7
	Prepaid expenses and other current assets	95			107
	Deferred income taxes	3			3
	Property, plant and equipment, net	6			6
	Goodwill	3			3
	Intangible assets, net	21			25
	Other assets	1			3
	Total assets	$	155		$	180
	Accounts payable	38			48
	Accrued and other current liabilities	55			62
	Deferred revenue	2			2
	Other liabilities	7			6
	Total liabilities	$	102		$	118
	Because the Company utilizes a centralized approach to cash management and the financing of its operations, all cash that is generated by discontinued operations is routinely transferred to the Company's financing subsidiaries in continuing operations. As a result, Transfers from discontinued operations on the Company's Consolidated Statement of Cash Flows reflects the net cash movements from discontinued operations to continuing operations that have occurred during the period.

Restructuring_and_Asset_Impair

Restructuring and Asset Impairment Charges, Net	6 Months Ended
	Mar. 27, 2015
Restructuring and Related Activities [Abstract]
Restructuring and Asset Impairment Charges, Net	Restructuring and Asset Impairment Charges, Net
	During fiscal 2015, the Company identified and pursued additional opportunities for cost savings through restructuring activities and workforce reductions to improve operating efficiencies across the Company's businesses. The Company expects to incur restructuring and restructuring related charges in the range of $75 million to $100 million in fiscal 2015, which does not include repositioning charges as described below.
	The Company recorded restructuring and asset impairment charges by action as follows ($ in millions):
		For the Quarters Ended						For the Six Months Ended
		27-Mar-15			28-Mar-14			27-Mar-15		28-Mar-14
	2015 actions	$	9		$	—		$	58	$	—
	2014 actions	4			8			10		9
	2013 and prior actions	(1		)	(1		)	2		1
	Total	$	12		$	7		$	70	$	10
	2015 Actions
	Restructuring and asset impairment charges, net, during the quarter and six months ended March 27, 2015 related to the 2015 actions are as follows ($ in millions):
		For the Quarter Ended March 27, 2015
		Employee
		Severance and
		Benefits
	NA Installation & Services	$	4
	ROW Installation & Services	4
	Global Products	1
	Total	$	9
		For the Six Months Ended March 27, 2015
		Employee			Facility Exit and Other Charges			Total
		Severance and
		Benefits
	NA Installation & Services	$	26		$	—		$	26
	ROW Installation & Services	14			5			19
	Global Products	3			—			3
	Corporate and Other	10			—			10
	Total	$	53		$	5		$	58
	The rollforward of the reserves from September 26, 2014 to March 27, 2015 is as follows ($ in millions):
	Balance as of September 26, 2014	$	—
	Charges	60
	Reversals	(2		)
	Utilization	(25		)
	Currency translation	(1		)
	Balance as of March 27, 2015	$	32
	2014 Actions
	Restructuring and asset impairment charges, net, during the quarters and six months ended March 27, 2015 and March 28, 2014 related to the 2014 actions are as follows ($ in millions):
		For the Quarter Ended			For the Quarter Ended
		27-Mar-15			28-Mar-14
		Employee			Employee
		Severance and			Severance and
		Benefits			Benefits
	NA Installation & Services	$	—		$	3
	ROW Installation & Services	—			4
	Global Products	4			1
	Total	$	4		$	8
		For the Six Months Ended			For the Six Months Ended
		27-Mar-15			28-Mar-14
		Employee			Employee
		Severance and			Severance and
		Benefits			Benefits
	NA Installation & Services	$	1		$	3
	ROW Installation & Services	—			5
	Global Products	9			1
	Total	$	10		$	9
	Restructuring and asset impairment charges, net, incurred cumulative to date from initiation of the 2014 actions are as follows ($ in millions):
		Employee			Facility Exit			Charges Reflected in SG&A		Total
		Severance and			and Other
		Benefits			Charges
	NA Installation & Services	$	17		$	—		$	—	$	17
	ROW Installation & Services	18			5			—		23
	Global Products	12			—			2		14
	Total	$	47		$	5		$	2	$	54
	The rollforward of the reserves from September 26, 2014 to March 27, 2015 is as follows ($ in millions):
Balance as of September 26, 2014	$	29
Charges	10
Utilization	(14		)
Currency translation	(2		)
Balance as of March 27, 2015	$	23
2013 and prior actions
The Company continues to maintain restructuring reserves related to actions initiated prior to fiscal 2014. The total amount of these reserves was $50 million and $70 million as of March 27, 2015 and September 26, 2014, respectively. The Company incurred $2 million and $4 million of restructuring charges, $3 million and $5 million of reversals, and utilized $6 million and $17 million for the quarters ended March 27, 2015 and March 28, 2014, respectively, related to 2013 and prior actions. The Company incurred $5 million and $14 million of restructuring charges, $3 million and $13 million of reversals, and utilized $15 million and $41 million for the six months ended March 27, 2015 and March 28, 2014, respectively, related to 2013 and prior actions. The remaining change in reserve during the quarters and six months ended March 27, 2015 and March 28, 2014 relates to currency translation. The aggregate remaining reserves primarily relate to facility exit costs for long-term non-cancelable lease obligations primarily within the Company's ROW Installation & Services segment.
Total Restructuring Reserves
As of March 27, 2015 and September 26, 2014, restructuring reserves related to all actions were included in the Company's Consolidated Balance Sheets as follows ($ in millions):
	As of
	March 27,			September 26, 2014
	2015
Accrued and other current liabilities	$	90		$	83
Other liabilities	15			16
Total	$	105		$	99
Repositioning
The Company has initiated certain global actions designed to reduce its cost structure and improve future profitability by streamlining operations and better aligning functions, which the Company refers to as repositioning actions. These actions may or may not lead to a future restructuring action. During the quarters ended March 27, 2015 and March 28, 2014, the Company recorded repositioning charges of $17 million and $9 million, respectively, and $34 million and $15 million for the six months ended March 27, 2015 and March 28, 2014, respectively, primarily related to professional fees which have been reflected in Selling, general and administrative expenses in the Consolidated Statements of Operations.

Acquisitions

Acquisitions	6 Months Ended
	Mar. 27, 2015
Business Combinations [Abstract]
Acquisitions	Acquisitions
	During the quarter ended March 27, 2015, total consideration paid, net of $6 million of cash acquired and $5 million of holdback liability, for six acquisitions included in continuing operations was $373 million. Current quarter activity is primarily related to the acquisition of Industrial Safety Technologies International ("IST"), a global leader in gas and flame detection with operations in Europe, the Middle East, China, and the U.S., for total consideration paid, net of $5 million of cash acquired, of $327 million. The purchase price for IST was allocated to $70 million of assets, $134 million of goodwill, $143 million of intangible assets and the assumption of $15 million of liabilities. IST is being integrated into the Global Products segment. The remaining $46 million in purchase price relates to five acquisitions that will be integrated into the ROW Installation & Services and Global Products segments and working capital adjustments related to prior year acquisitions.
	During the six months ended March 27, 2015, total consideration paid, net of $26 million of cash acquired and $8 million of holdback liability, for 11 acquisitions included in continuing operations was $525 million. This includes working capital adjustments described above. In addition to the acquisition of IST within the Global Products segment, the Company made 10 acquisitions during the six months ended March 27, 2015.
	The determination of fair value for certain assets and liabilities relating to the acquisitions made during the quarter ended December 27, 2014 has been finalized, which did not result in a material adjustment. The final determination of fair value for certain assets and liabilities relating to several of the acquisitions made during the quarter ended March 27, 2015 remains subject to change based on final valuations of the assets acquired and liabilities assumed. The Company does not expect the finalization of these matters, which is expected to be completed within fiscal 2015, to have a material effect on the purchase price allocation.
	During the quarter ended March 28, 2014, the Company did not complete any acquisitions. During the six months ended March 28, 2014, total consideration paid, net of $1 million cash acquired, and $1 million of contingent consideration, for acquisitions included in continuing operations was $54 million, This was entirely related to the acquisition of Westfire, Inc. ("Westfire") on November 8, 2013. Westfire, a fire protection services company with operations in the United States, Chile and Peru, provides critical special-hazard suppression and detection applications in mining, telecommunications and other vertical markets and has been integrated into the NA Installation & Services and ROW Installation & Services segments.

Income_Taxes

Income Taxes	6 Months Ended
	Mar. 27, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	Tyco did not have a significant change to its unrecognized tax benefits during the quarter ended March 27, 2015.
	Many of Tyco's uncertain tax positions relate to tax years that remain subject to audit by the taxing authorities in U.S. federal, state and local or foreign jurisdictions. Open tax years in significant jurisdictions included in continuing operations are as follows:
	Jurisdiction	Years Open
		To Audit
	Australia	2004-2014
	Canada	2006-2014
	Germany	2005-2014
	Ireland	2010-2014
	Switzerland	2005-2014
	United Kingdom	2012-2014
	United States	1997-2014
	Based on the current status of its income tax audits, Tyco believes that it is reasonably possible that between nil and $20 million in unrecognized tax benefits may be resolved in the next twelve months.
	At each balance sheet date, the Company evaluates whether it is more likely than not that Tyco's deferred tax assets will be realized and if sufficient future taxable income will be available by assessing current period and projected operating results and other pertinent data. As of March 27, 2015, Tyco recorded deferred tax assets of approximately $349 million, which is comprised of $2.4 billion gross deferred tax assets net of $2.0 billion valuation allowances.
	Tax Sharing Agreement and Other Income Tax Matters
	In connection with the 2012 and 2007 Separations, Tyco entered into the 2012 and 2007 Tax Sharing Agreements, respectively, that govern the respective rights, responsibilities, and obligations of (i) Tyco, Pentair and ADT after the 2012 Separation and (ii) Tyco, Medtronic (formerly Covidien plc) and TE Connectivity after the 2007 Separation, with respect to taxes. Specifically, this includes taxes in the ordinary course of business and taxes, if any, incurred as a result of any failure of the respective distributions to qualify tax-free for U.S. federal income tax purposes within the meaning of Section 355 of the Internal Revenue Code ("the Code") or certain internal transactions undertaken in anticipation of the spin-offs to qualify for tax-favored treatment under the Code.
	Under the 2012 Tax Sharing Agreement, Tyco, Pentair and ADT share (i) certain pre-Distribution income tax liabilities that arise from adjustments made by tax authorities to ADT's, Tyco Flow Control's and Tyco's income tax returns, and (ii) payments required to be made by Tyco with respect to the 2007 Tax Sharing Agreement, excluding approximately $175 million of pre-2012 Separation related tax liabilities (collectively, "Shared Tax Liabilities"). Tyco will be responsible for the first $500 million of Shared Tax Liabilities. Pentair and ADT will share 42% and 58%, respectively, of the next $225 million of Shared Tax Liabilities. Tyco, Pentair and ADT will share 52.5%, 20% and 27.5%, respectively, of Shared Tax Liabilities above $725 million. All costs and expenses associated with the management of these Shared Tax Liabilities will generally be shared 20%, 27.5% and 52.5% by Pentair, ADT and Tyco, respectively. In connection with the execution of the 2012 Tax Sharing Arrangement, Tyco established liabilities representing the fair market value of its obligations which is recorded in Other liabilities in the Company's Consolidated Balance Sheet with an offset to Tyco shareholders' equity.
	Under the 2007 Tax Sharing Agreement, Tyco shares responsibility for certain of Tyco's, Medtronic's and TE Connectivity's income tax liabilities, which result in cash payments, based on a sharing formula for periods prior to and including June 29, 2007. More specifically, Tyco, Medtronic and TE Connectivity share 27%, 42% and 31%, respectively, of shared income tax liabilities that arise from adjustments made by tax authorities to Tyco's, Medtronic's and TE Connectivity's U.S. and certain non-U.S. income tax returns. The costs and expenses associated with the management of these shared tax liabilities are generally shared equally among the parties. In connection with the execution of the 2007 Tax Sharing Agreement, Tyco established a net receivable from Medtronic and TE Connectivity representing the amount Tyco expected to receive for pre-2007 Separation uncertain tax positions, including amounts owed to the Internal Revenue Service ("IRS"). Tyco also established liabilities representing the fair market value of its share of Medtronic's and TE Connectivity's estimated obligations, primarily to the IRS, for their pre-2007 Separation taxes covered by the 2007 Tax Sharing Agreement.
	Tyco assesses the shared tax liabilities and related guaranteed liabilities related to both the 2012 and 2007 Tax Sharing Agreements at each reporting period. Tyco will provide payment to Pentair and ADT under the 2012 Tax Sharing Agreement and Medtronic and TE Connectivity under the 2007 Tax Sharing Agreement as the shared income tax liabilities are settled. Settlement is expected to occur as the tax audit and legal processes are completed for the impacted years and cash payments are made. Due to the nature of the unresolved adjustments described in the next paragraph, the maximum amount of future payments under the 2012 and 2007 Tax Sharing Agreements is not known. Such cash payments, when they occur, will reduce the guarantor liability as they represent an equivalent reduction of risk. Tyco also assesses the sufficiency of the 2012 and 2007 Tax Sharing Agreements guarantee liabilities on a quarterly basis and will increase the liability when it is probable that cash payments expected to be made exceed the recorded balance.
	Tyco and its subsidiaries' income tax returns are examined periodically by various tax authorities. In connection with these examinations, tax authorities, including the IRS, have raised issues and proposed tax adjustments, in particular with respect to years preceding the 2007 Separation. The issues and proposed adjustments related to such years are generally subject to the sharing provisions of the 2007 Tax Sharing Agreement and Tyco's liabilities under the 2007 Tax Sharing Agreement are further subject to the sharing provisions in the 2012 Tax Sharing Agreement. Tyco has previously disclosed that in connection with U.S. federal tax audits, the IRS has raised a number of issues and proposed tax adjustments for periods beginning with the 1997 tax year. Although Tyco has been able to resolve substantially all of the issues and adjustments proposed by the IRS for tax years through 2007, it has not been able to resolve matters related to the treatment of certain intercompany debt transactions during the period. As a result, on June 20, 2013, Tyco received Notices of Deficiency from the IRS asserting that several of Tyco's former U.S. subsidiaries owe additional taxes of $883.3 million plus penalties of $154 million based on audits of the 1997 through 2000 tax years of Tyco and its subsidiaries as they existed at that time. In addition, Tyco received Final Partnership Administrative Adjustments for certain U.S. partnerships owned by former U.S. subsidiaries with respect to which an additional tax deficiency of approximately $30 million has been asserted. These amounts exclude interest and do not reflect the impact on subsequent periods if the IRS position described below is ultimately proved correct.
	The IRS asserted in the Notices of Deficiency that substantially all of Tyco's intercompany debt originated during the 1997 - 2000 period should not be treated as debt for U.S. federal income tax purposes, and has disallowed interest and related deductions recognized on U.S. income tax returns totaling approximately $2.9 billion. Tyco strongly disagrees with the IRS position and has filed petitions with the U.S. Tax Court contesting the IRS proposed adjustments. A trial date has been set for February 2016. Tyco believes that it has meritorious defenses for its tax filings, that the IRS positions with regard to these matters are inconsistent with the applicable tax laws and existing Treasury regulations, and that the previously reported taxes for the years in question are appropriate.
	No payments with respect to these matters would be required until the dispute is definitively resolved, which, based on the experience of other companies, could take several years. Tyco believes that its income tax reserves and the liabilities recorded in the Consolidated Balance Sheet for the Tax Sharing Agreements continue to be appropriate. However, the ultimate resolution of these matters, and the impact of that resolution, are uncertain and could have a material impact on Tyco's financial condition, results of operations and cash flows. In particular, if the IRS is successful in asserting its claim, it would have an adverse impact on interest deductions related to the same intercompany debt in subsequent time periods, totaling approximately $6.6 billion, which is also expected to be disallowed by the IRS.
	As noted above, Tyco has assessed its obligations under the 2007 Tax Sharing Agreement to determine that its recorded liability is sufficient to cover the indemnifications made by it under such agreement. In the absence of observable transactions for identical or similar guarantees, Tyco determined the fair value of these guarantees and indemnifications utilizing expected present value measurement techniques. Significant assumptions utilized to determine fair value included determining a range of potential outcomes, assigning a probability weighting to each potential outcome and estimating the anticipated timing of resolution. The probability weighted outcomes were discounted using Tyco's incremental borrowing rate. However, the ultimate resolution of these matters is uncertain and could result in a material adverse impact to the Company's financial position, results of operations, cash flows, or the effective tax rate in future reporting periods.
	In addition to dealing with tax liabilities for periods prior to the respective Separations, the 2012 and 2007 Tax Sharing Agreements contain sharing provisions to address the contingencies that the 2012 or 2007 Separations, or internal transactions related thereto, may be deemed taxable by U.S. or non U.S. taxing authorities. In the event the 2012 Separation is determined to be taxable and such determination was the result of actions taken after the 2012 Separations by Tyco, ADT or Pentair, the party responsible for such failure would be responsible for all taxes imposed on each company as a result thereof. If such determination is not the result of actions taken by Tyco, ADT or Pentair after the 2012 Separation, then Tyco, ADT and Pentair would be responsible for any taxes imposed on any of the companies as a result of such determination in the same manner and in the same proportions as described above. Similar provisions exist in the 2007 Tax Sharing Agreement. If either of the 2007 or 2012 Separation, or internal transactions taken in anticipation thereof, were deemed taxable, the associated liability could be significant. Tyco is responsible for all of its own taxes that are not shared pursuant to the 2012 and 2007 Tax Sharing Agreements' sharing formulas. In addition, Pentair and ADT, and Medtronic and TE Connectivity are responsible for their tax liabilities that are not subject to the 2012 or 2007 Tax Sharing Agreements' sharing formula.
	Each of the 2012 and 2007 Tax Sharing Agreements provides that, if any party to such agreement were to default in its obligation to another party to pay its share of the distribution taxes that arise as a result of no party's fault, each non-defaulting party to the agreement would be required to pay, equally with any other non-defaulting party to the agreement, the amounts in default. In addition, if another party to the 2012 or 2007 Tax Sharing Agreements that is responsible for all or a portion of an income tax liability were to default in its payment of such liability to a taxing authority, Tyco could be liable under applicable tax law for such liabilities and required to make additional tax payments. Accordingly, under certain circumstances, Tyco may be obligated to pay amounts in excess of its agreed-upon share of its tax liabilities under either of the 2012 or 2007 Tax Sharing Agreements.
	The receivables and liabilities related to the 2012 and 2007 Tax Sharing Agreements as of March 27, 2015 and September 26, 2014, are as follows ($ in millions):
		2012 Tax Sharing Agreement						2007 Tax Sharing Agreement
		As of						As of
		27-Mar-15			26-Sep-14			27-Mar-15			26-Sep-14
	Tax sharing agreement related receivables:
	Prepaid expenses and other current assets	$	—		$	—		$	3		$	3
	Other assets	—			—			24			23
		—			—			27			26
	Tax sharing agreement related liabilities:
	Accrued and other current liabilities	—			—			(21		)	(21		)
	Other liabilities	(46		)	(46		)	(194		)	(194		)
		(46		)	(46		)	(215		)	(215		)
	Net liability	$	(46	)	$	(46	)	$	(188	)	$	(189	)
	Other Income Tax Matters
	Except for earnings that are currently distributed, no additional material provision has been made for U.S. or non-U.S. income taxes on the undistributed earnings of subsidiaries or for deferred tax liabilities for temporary differences related to investments in subsidiaries, since the earnings are expected to be permanently reinvested, the investments are essentially permanent in duration, or Tyco has concluded that no additional tax liability will arise as a result of the distribution of such earnings. A liability could arise if amounts are distributed by such subsidiaries or if such subsidiaries are ultimately disposed. It is not practicable to estimate the additional income taxes related to permanently reinvested earnings or the basis differences related to investments in subsidiaries.

Earnings_Per_Share

Earnings Per Share	6 Months Ended
	Mar. 27, 2015
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share
	The reconciliations between basic and diluted earnings per share attributable to Tyco ordinary shareholders are as follows (in millions, except per share data):
		For the Quarter Ended					For the Quarter Ended
		27-Mar-15					28-Mar-14
		Income		Shares	Per Share		Income		Shares	Per Share
					Amount					Amount
	Basic earnings per share attributable to Tyco ordinary shareholders:
	Income from continuing operations	$	183	420	$	0.44	$	192	461	$	0.41
	Share options and restricted share awards	—		7			—		8
	Diluted earnings per share attributable to Tyco ordinary shareholders:
	Income from continuing operations attributable to Tyco ordinary shareholders, giving effect to dilutive adjustments	$	183	427	$	0.43	$	192	469	$	0.41
		For the Six Months Ended					For the Six Months Ended
		27-Mar-15					28-Mar-14
		Income		Shares	Per Share		Income		Shares	Per Share
					Amount					Amount
	Basic earnings per share attributable to Tyco ordinary shareholders:
	Income from continuing operations	$	347	420	$	0.83	$	437	462	$	0.94
	Share options and restricted share awards	—		7			—		8
	Diluted earnings per share attributable to Tyco ordinary shareholders:
	Income from continuing operations attributable to Tyco ordinary shareholders, giving effect to dilutive adjustments	$	347	427	$	0.81	$	437	470	$	0.93
	The computation of diluted earnings per share for the quarter and six months ended March 27, 2015 excludes the effect of the potential exercise of share options to purchase approximately 3 million shares for both periods and excludes restricted stock units of approximately 1 million shares for both periods because the effect would be anti-dilutive.
	The computation of diluted earnings per share for the quarter and six months ended March 28, 2014 excludes the effect of the potential exercise of share options to purchase approximately 2 million shares for both periods and excludes restricted stock units of approximately 2 million shares for both periods because the effect would be anti-dilutive.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	6 Months Ended
	Mar. 27, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets
	The changes in the carrying amount of goodwill by segment are as follows ($ in millions):
		NA Installation &			ROW			Global			Total
		Services			Installation &			Products
					Services
	Gross goodwill	$	2,104		$	1,991		$	1,824		$	5,919
	Accumulated impairment	(126		)	(1,068		)	(567		)	(1,761		)
	Carrying amount of goodwill as of September 27, 2013	1,978			923			1,257			4,158
	2014 activity:
	Acquisitions/ purchase accounting adjustments	10			15			(4		)	21
	Currency translation	(12		)	(34		)	(11		)	(57		)
	Gross goodwill	$	2,102		$	1,972		$	1,809		$	5,883
	Accumulated impairment	(126		)	(1,068		)	(567		)	(1,761		)
	Carrying amount of goodwill as of September 26, 2014	1,976			904			1,242			4,122
	2015 activity:
	Acquisitions / purchase accounting adjustments	15			34			275			324
	Currency translation	(20		)	(128		)	(33		)	(181		)
	Gross goodwill	$	2,097		$	1,878		$	2,051		$	6,026
	Accumulated impairment	(126		)	(1,068		)	(567		)	(1,761		)
	Carrying amount of goodwill as of March 27, 2015	$	1,971		$	810		$	1,484		$	4,265
	The following table sets forth the gross carrying amount and accumulated amortization of the Company's intangible assets as of March 27, 2015 and September 26, 2014 ($ in millions):
		As of
		27-Mar-15						26-Sep-14
		Gross			Accumulated			Gross			Accumulated
		Carrying			Amortization			Carrying			Amortization
		Amount						Amount
	Amortizable:
	Contracts and related customer relationships	$	1,377		$	1,040		$	1,400		$	1,113
	Intellectual property	768			497			608			487
	Other	10			7			29			15
	Total	$	2,155		$	1,544		$	2,037		$	1,615
	Non-Amortizable:
	Intellectual property	$	212					$	214
	Franchise rights	76						76
	Other	9						—
	Total	$	297					$	290
	Intangible asset amortization expense for the quarters ended March 27, 2015 and March 28, 2014 was $21 million and $23 million, respectively. Intangible asset amortization expense for the six months ended March 27, 2015 and March 28, 2014 was $41 million and $46 million, respectively.
	The estimated aggregate amortization expense on intangible assets is expected to be approximately $40 million for the remainder of 2015, $88 million for 2016, $79 million for 2017, $74 million for 2018, and $330 million for 2019 and thereafter.

Debt

Debt	6 Months Ended
	Mar. 27, 2015
Debt Disclosure [Abstract]
Debt	Debt
	Debt as of March 27, 2015 and September 26, 2014 is as follows ($ in millions):
		As of
		27-Mar-15		26-Sep-14
	3.375% public notes due 2015 (1)	$	258	$	258
	3.75% public notes due 2018	67		67
	8.5% public notes due 2019	364		364
	7.0% public notes due 2019	245		245
	6.875% public notes due 2021	465		465
	4.625% public notes due 2023	42		42
	1.375% public notes due 2025	548		—
	Other (2)	21		22
	Total debt	2,010		1,463
	Less current portion	278		20
	Long-term debt	$	1,732	$	1,443
	_______________________________________________________________________________
	(1) $258 million of 3.375% public notes due October 2015 is included in the current portion of debt as of March 27, 2015.
	(2) $20 million of the amount shown as other is included in the current portion of the Company's total debt as of both March 27, 2015 and September 26, 2014.
	Fair Value
	The carrying amount of Tyco's debt subject to the fair value disclosure requirements as of March 27, 2015 and September 26, 2014 was $1,989 million and $1,441 million, respectively. The Company has determined the fair value of such debt to be $2,198 million and $1,670 million as of March 27, 2015 and September 26, 2014, respectively. The Company utilizes various valuation methodologies to determine the fair value of its debt, which is primarily dependent on the type of market in which the Company's debt is traded. When available, the Company uses quoted market prices to determine the fair value of its debt that is traded in active markets. As of March 27, 2015 and September 26, 2014, $1,989 million and $1,441 million, respectively, of the Company's debt, which is actively traded and subject to the fair value disclosure requirements, is classified as Level 1 in the fair value hierarchy.
	Commercial Paper
	From time to time, the Company's wholly-owned subsidiary, Tyco International Finance S.A. ("TIFSA") may issue commercial paper for general corporate purposes. The maximum aggregate amount of unsecured commercial paper notes available to be issued on a private placement basis under the commercial paper program is $1 billion as of March 27, 2015. As of March 27, 2015 and September 26, 2014, TIFSA had no commercial paper outstanding.
	Credit Facilities
	The Company's committed revolving credit facility totaled $1 billion as of March 27, 2015. This revolving credit facility may be used for working capital, capital expenditures and general corporate purposes. As of March 27, 2015 and September 26, 2014, there were no amounts drawn under the Company's revolving credit facility. Interest under the revolving credit facility is variable and is calculated by reference to LIBOR or an alternate base rate.
	Debt Issuance/Repayment
	On February 25, 2015, TIFSA issued €500 million aggregate principal amount of 1.375% Notes due February 25, 2025 (the "Notes"), which are fully and unconditionally guaranteed by each of the Company and Tyco Fire & Security Finance S.C.A. TIFSA received total net proceeds of approximately $563 million after deducting debt issuance costs of approximately $5 million and a debt discount of approximately $1 million. The net proceeds, were made available for general corporate purposes. The Notes are TIFSA’s senior unsecured obligations and rank equally in right of payment with all of its existing and future senior debt, and senior to any subordinated indebtedness that TIFSA may incur. The Notes were designated as a net investment hedge. See Note 10.

Financial_Instruments

Financial Instruments	6 Months Ended
	Mar. 27, 2015
Financial Instruments, Owned, at Fair Value [Abstract]
Financial Instruments	Financial Instruments
	The Company's financial instruments consist primarily of cash and cash equivalents, time deposits, accounts receivable, investments, accounts payable, debt and derivative financial instruments. The fair value of cash and cash equivalents, time deposits, accounts receivable, and accounts payable approximated book value as of March 27, 2015 and September 26, 2014. The fair value of derivative financial instruments was not material to any of the periods presented. See below for the fair value of investments and Note 9 for the fair value of debt.
	Derivative Instruments
	In the normal course of business, Tyco is exposed to market risk arising from changes in currency exchange rates, interest rates and commodity prices. The Company may use derivative financial instruments to manage exposures to foreign currency, interest rate and commodity risks. The Company's objective for utilizing derivative financial instruments is to manage these risks using the most effective methods to eliminate or reduce the impacts of these exposures. The Company does not use derivative financial instruments for trading or speculative purposes. As of and during the six months ended March 27, 2015, the Company did not hold or enter into any commodity derivative instruments or interest rate swaps.
	For derivative instruments that are designated and qualified as hedging instruments for accounting purposes, the Company documents and links the relationships between the hedging instruments and hedged items. The Company also assesses and documents at the hedge's inception whether the derivatives used in hedging transactions are effective in offsetting changes in fair values associated with the hedged items. During the quarter, the Company designated its €500 million of 1.375% public notes due February 2025 as a net investment hedge of the Company’s investments in certain of its international subsidiaries that use the Euro as their functional currency and intercompany permanent loans in order to reduce the volatility caused by changes in foreign currency exchange rates of the Euro with respect to the U.S. Dollar. During the quarter ended March 27, 2015, the change in the carrying value due to remeasurement of the Euro denominated 2025 Notes resulted in a $20 million gain reported in Accumulated other comprehensive loss on the Consolidated Balance Sheets. This hedge did not result in any hedge ineffectiveness for the quarter and six months ended March 27, 2015. During the quarter ended March 28, 2014, the Company did not have hedging instruments that were designated and qualified as hedging instruments for accounting purposes.
	As of March 27, 2015 and September 26, 2014, the total gross notional amount of the Company's foreign exchange contracts was $298 million and $258 million, respectively. The fair value of these derivative financial instruments and impact of such changes in the fair value was not material to the Consolidated Balance Sheets as of March 27, 2015 and September 26, 2014 or Consolidated Statements of Operations and Consolidated Statements of Cash Flows for the quarters and six months ended March 27, 2015 and March 28, 2014.
	Counterparty Credit Risk
	The use of derivative financial instruments exposes the Company to counterparty credit risk. Tyco has established policies and procedures to limit the potential for counterparty credit risk, including establishing limits for credit exposure and continually assessing the creditworthiness of counterparties. As a matter of practice, the Company deals with major banks worldwide having strong investment grade long-term credit ratings. To further reduce the risk of loss, the Company generally enters into International Swaps and Derivatives Association master netting agreements with substantially all of its counterparties. The Company's derivative contracts do not contain any credit risk related contingent features and do not require collateral or other security to be furnished by the Company or the counterparties. The Company's exposure to credit risk associated with its derivative instruments is measured on an individual counterparty basis, as well as by groups of counterparties that share similar attributes. We do not anticipate any non-performance by any of our counterparties, and the concentration of risk with financial institutions does not present significant credit risk to the Company.
	Investments
	Investments may primarily include marketable securities such as U.S. government obligations, U.S. government agency and corporate debt securities, equity securities, exchange traded funds or time deposits with banks.
	When available, the Company uses quoted market prices to determine the fair value of investment securities. Such investments are included in Level 1. When quoted market prices are not readily available, pricing determinations are made based on the results of market approach valuation models using observable market data such as recently reported trades, bid and offer information and benchmark securities. These investments are included in Level 2 and consist primarily of U.S. government agency securities and corporate debt securities.
	Assets Measured at Fair Value on a Recurring Basis
	The following table presents the Company's hierarchy for its assets measured at fair value on a recurring basis as of March 27, 2015 and September 26, 2014 ($ in millions):
								Consolidated Balance Sheet
								Classification
		As of March 27, 2015						Prepaids and		Other Assets
								Other Current
	Investment Assets:	Level 1		Level 2		Total		Assets
	Available-for-sale securities:
	Exchange traded funds (fixed income) (1)	$	198	$	—	$	198	$	—	$	198
	Exchange traded funds (equity) (1)	84		—		84		—		84
	Trading securities:
	Exchange traded funds (equity)	63		—		63		63		—
		$	345	$	—	$	345	$	63	$	282
	(1) Classified as restricted investments. See Note 11.
								Consolidated Balance Sheet
								Classification
		As of September 26, 2014						Prepaids and
								Other Current
	Investment Assets:	Level 1		Level 2		Total		Assets
	Time deposits	$	275	$	—	$	275	$	275
	Trading Securities:
	Exchange traded funds (equity)	62		—		62		62
		$	337	$	—	$	337	$	337
	During the quarter and six months ended March 27, 2015, the Company did not have any significant transfers between levels within the fair value hierarchy.
	Unrealized gains and losses related to trading securities are recorded in Other (expense) income, net in the Consolidated Statements of Operations. Unrealized gains and losses related to available for sale securities are recorded in Other comprehensive income.
	Other
	The Company had $1.4 billion and $1.5 billion of intercompany loans designated as permanent in nature as of March 27, 2015 and September 26, 2014, respectively. Additionally, for the quarters ended March 27, 2015 and March 28, 2014, the Company recorded $75 million and $7 million of a cumulative translation loss, respectively, through Accumulated other comprehensive loss related to these loans.
	For the six months ended March 27, 2015 and March 28, 2014, the Company recorded $145 million of a cumulative translation loss and $4 million of a cumulative translation gain, respectively, through Accumulated other comprehensive loss related to these loans.

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Mar. 27, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	Legacy Matters Related to Former Management
	In recent years, the Company has settled several lawsuits involving disputes with former management. With respect to Dennis Kozlowski, the Company's former chief executive officer, in the first quarter of fiscal 2014, the parties signed an agreement resolving all outstanding disputes, with Mr. Kozlowski agreeing to release the Company from any claims to monetary amounts related to compensation, retention or other arrangements. As a result, in the first quarter of fiscal 2014, the Company reversed a non-cash net liability of approximately $92 million which was recorded in Selling, general and administrative expenses in the Consolidated Statement of Operations for the amounts allegedly due to him. Pursuant to the settlement agreement, Tyco will be entitled to a portion of the proceeds, if any, from the future sale of certain assets owned by Mr. Kozlowski, the timing and amount of which is uncertain.
	With respect to Mark Swartz, the Company's former chief financial officer, in November 2014, the parties reached a definitive agreement to resolve all outstanding disputes, with Mr. Swartz agreeing to release the Company from any claims to monetary amounts related to compensation, retention or other arrangements alleged to have existed between him and the Company. In the first quarter of fiscal 2015, the Company also received approximately $12 million in cash from Mr. Swartz, $5 million of which will be shared pursuant to the terms of a legacy class action lawsuit, resulting in a net recovery of $7 million for the Company, which was recorded in Selling, general and administrative expenses in the Consolidated Statement of Operations. The cash received has been classified as restricted.
	Environmental Matters
	Tyco is involved in various stages of investigation and cleanup related to environmental remediation matters at a number of sites. The ultimate cost of site cleanup is difficult to predict given the uncertainties regarding the extent of the required cleanup, the interpretation of applicable laws and regulations and alternative cleanup methods. As of March 27, 2015, Tyco concluded that it was probable that it would incur remedial costs in the range of approximately $29 million to $72 million. As of March 27, 2015, Tyco concluded that the best estimate within this range is approximately $33 million, of which $15 million is included in Accrued and other current liabilities and $18 million is included in Other liabilities in the Company's Consolidated Balance Sheet.
	The majority of the liabilities described above relate to ongoing remediation efforts at a facility in the Company's Global Products segment located in Marinette, Wisconsin, which the Company acquired in 1990 in connection with its acquisition of, among other things, the Ansul product line. Prior to Tyco's acquisition, Ansul manufactured arsenic-based agricultural herbicides at the Marinette facility, which resulted in significant arsenic contamination of soil and groundwater on the Marinette site and in parts of the adjoining Menominee River. Ansul has been engaged in ongoing remediation efforts at the Marinette site since 1990, and in February 2009 entered into an Administrative Consent Order (the "Consent Order") with the U.S. Environmental Protection Agency to address the presence of arsenic at the Marinette site. Under this agreement, Ansul's principal obligations are to contain the arsenic contamination on the site, pump and treat on-site groundwater, dredge, treat and properly dispose of contaminated sediments in the adjoining river areas, and monitor contamination levels on an ongoing basis. Activities completed under the Consent Order since 2009 include the installation of a subsurface barrier wall around the facility to contain contaminated groundwater, the installation of a groundwater extraction and treatment system and the dredging and offsite disposal of treated river sediment. As of March 27, 2015, the Company concluded that its remaining remediation and monitoring costs related to the Marinette facility were in the range of approximately $19 million to $46 million. The Company's best estimate within that range is approximately $22 million, of which $10 million is included in Accrued and other current liabilities and $12 million is included in Other liabilities in the Company's Consolidated Balance Sheet. Although the Company has recorded its best estimate of the costs that it will incur to remediate and monitor the arsenic contamination at the Marinette facility, it is possible that technological, regulatory or enforcement developments, the results of environmental studies or other factors could change the Company's expectations with respect to future charges and cash outlays, and such changes could be material to the Company's future results of operations, financial condition or cash flows.
	Asbestos Matters
	The Company and certain of its subsidiaries, including Yarway Corporation (“Yarway”) and Grinnell LLC (“Grinnell”), along with numerous other third parties, are named as defendants in personal injury lawsuits based on alleged exposure to asbestos containing materials. Over 90% of cases pending against affiliates of the Company have been filed against Yarway or Grinnell, and have typically involved product liability claims based primarily on allegations of manufacture, sale or distribution of industrial products that either contained asbestos or were used with asbestos containing components. Claims filed against Yarway derive from Yarway’s purported use of asbestos-containing gaskets and packing in the sale or distribution of steam valves and traps and from its alleged manufacture of asbestos-containing expansion joint packing. Yarway’s alleged manufacture, distribution and/or sale of asbestos-containing materials ceased by 1988, and Yarway ceased substantially all of its manufacturing, distribution and sales operations in 2003. Claims filed against Grinnell typically allege that it manufactured, sold or distributed valves, gaskets, piping and sprinkler systems containing asbestos.
	As of March 27, 2015, the Company has determined that there were approximately 5,900 claims pending against it, which includes approximately 3,200 claims pending against Yarway. This amount reflects the Company's current estimate of the number of viable claims made against it and includes adjustments for claims that are not actively being prosecuted, identify incorrect defendants, are duplicative of other actions or for which the Company is indemnified by third parties. Additionally, as a result of the Yarway bankruptcy filing described below, claims against Yarway have been stayed since April 2013.
	As of March 27, 2015, the Company's estimated net liability, including Yarway, recorded within the Company's Consolidated Balance Sheet is $319 million. The net liability is comprised of a liability for pending and future claims and related defense costs of $846 million, of which $349 million is recorded in Accrued and other current liabilities, and $497 million is recorded in Other liabilities. The Company also maintains separate cash, investment and other assets of $527 million, of which $43 million is recorded in Prepaid expenses and other current assets, and $484 million is recorded in Other assets. Assets include $22 million of cash and $282 million of investments, which have all been designated as restricted. The Company believes that the asbestos related liabilities and insurance related assets as of March 27, 2015 are appropriate. As of September 26, 2014, the Company's estimated net liability, including Yarway, of $608 million was recorded within the Company's Consolidated Balance Sheet as a liability for pending and future claims and related defense costs of $853 million, and separately as an asset for insurance recoveries of $245 million.
	Yarway
	As previously disclosed, on April 22, 2013 Yarway filed a voluntary petition for relief under Chapter 11 of the U.S. Bankruptcy Code (“Chapter 11”) in the United States Bankruptcy Court for the District of Delaware (“Bankruptcy Court”). As a result of this filing, the continuation or commencement of asbestos-related litigation against Yarway has been enjoined by the automatic stay imposed by the U.S. Bankruptcy Code. Yarway's goal has been to negotiate, obtain approval of, and consummate a plan of reorganization that establishes a trust to fairly and equitably value and pay current and future Yarway asbestos claims, and that, in exchange for funding of the trust by the Company and/or its subsidiaries, provides permanent injunctive relief protecting the Company, each of its current and former affiliates and various other parties (the “Company Protected Parties”) from any further asbestos claims based on products manufactured, sold, and/or distributed by Yarway. On October 9, 2014, the Company reached an agreement in principle with Yarway, the Official Committee of Asbestos Claimants (“ACC”) appointed in the Yarway Chapter 11 case as the representative of current Yarway asbestos claimants, and the Future Claimants Representative (“FCR”) appointed in the Yarway Chapter 11 case as the representative of future Yarway asbestos claimants, to fund a section 524(g) trust for the resolution and payment of current and future Yarway asbestos claims. The agreement in principle will be implemented through a Chapter 11 plan of reorganization for Yarway, and is intended to resolve the potential liability of the Company Protected Parties for pending and future derivative personal injury claims related to exposure to asbestos-containing products that were allegedly manufactured, distributed, and/or sold by Yarway (“Yarway Asbestos Claims”). Under the Chapter 11 plan, an asbestos settlement trust (the “Yarway Trust”) that conforms to the provisions of Section 524(g) of the U.S. Bankruptcy Code will be established and, on the effective date of the Chapter 11 plan, the Company and Yarway will contribute to the Yarway Trust a total of approximately $325 million in cash (“Settlement Consideration”), which includes approximately $100 million relating to the settlement of intercompany amounts allegedly due to Yarway. In exchange for the Settlement Consideration, each of the Company Protected Parties will receive the benefit of a release from Yarway and an injunction under section 524(g) of the Bankruptcy Code permanently enjoining the assertion of Yarway Asbestos Claims against those Parties. On April 8, 2015, following the approval of the Plan by the required number of Yarway's current asbestos claimants, the Bankruptcy Court issued an order confirming the Plan. As a result, the Plan has been filed with the United States District Court for the District of Delaware ("District Court") and is awaiting affirmation by the District Court. There have been no objections filed with respect to the Plan. Upon the District Court's affirmation of the Plan, Yarway and the Plan proponents will schedule an effective date for the Plan, which is anticipated to occur during the Company's third fiscal quarter.
	On the effective date of the Plan, the Company and Yarway will pay the Settlement Consideration and Yarway Asbestos Claims against the Company Protected Parties will be permanently enjoined. Yarway is anticipated to become a wholly-owned subsidiary of the Yarway Trust and, accordingly, would no longer be owned by or be part of a consolidated group with the Company. As a result of the agreement in principle to settle, the Company recorded a charge of $225 million in Selling, general and administrative expenses in the Consolidated Statement of Operations during the fourth fiscal quarter of 2014.
	As a result of filing the voluntary bankruptcy petition during the third quarter of fiscal 2013, the Company recorded an expected loss upon deconsolidation of $10 million related to the Yarway Chapter 11 filing, which continues to represent the Company’s best estimate of its loss.
	Other Claims
	The Company continuously assesses the sufficiency of its estimated liability for pending and future asbestos claims and defense costs. On a quarterly basis, the Company evaluates actual experience regarding asbestos claims filed, settled and dismissed, amounts paid in settlements, and the recoverability of its insurance assets. If and when data from actual experience demonstrate an unfavorable discernible trend, the Company performs a valuation of its asbestos related liabilities and corresponding insurance assets including a comprehensive review of the underlying assumptions. In addition, the Company evaluates its ability to reasonably estimate claim activity beyond its current look-forward period in order to assess whether such period is appropriate. In addition to claims and litigation experience, the Company considers additional qualitative and quantitative factors such as changes in legislation, the legal environment, the Company’s strategy in managing claims and obtaining insurance, including its defense strategy, and health related trends in the overall population of individuals potentially exposed to asbestos. The Company evaluates all of these factors and determines whether a change in the estimate of its liability for pending and future claims and defense costs or insurance assets is warranted.
	During the fourth quarter of fiscal 2014, the Company concluded that an unfavorable trend had developed in actual claim filing activity compared to projected claim filing activity established during the Company’s most recent valuation. Accordingly, the Company, with the assistance of independent actuarial service providers, performed a revised valuation of its asbestos-related liabilities and corresponding insurance assets. As part of the revised valuation, the Company assessed whether a change in its look-forward period was appropriate, taking into consideration its more extensive history and experience with asbestos-related claims and litigation (including its experience with Yarway), and determined that it was possible to make a reasonable estimate of the actuarially determined ultimate risk of loss for pending and unasserted potential future asbestos-related claims through 2056. In connection with the revised valuation, the Company considered a recent settlement with one of its insurers calling for the establishment of a qualified settlement fund, and the results of a separate independent actuarial consulting firm report conducted in the fourth quarter to assist the Company in obtaining insurance to fully fund all estimable asbestos-related claims (excluding Yarway claims) incurred through 2056.
	The independent actuarial service firm calculated a total estimated liability for asbestos-related claims of the Company, which reflects the Company’s best estimate of its ultimate risk of loss to resolve all pending and future claims (excluding Yarway claims) through 2056, which is the Company’s reasonable best estimate of the actuarially determined time period through which asbestos-related claims will be filed against Company affiliates.
	In conjunction with determining the total estimated liability, the Company retained an independent third party to assist it in valuing its insurance assets responsive to asbestos-related claims, excluding Yarway claims. These insurance assets represent amounts due to the Company for previously settled claims and the probable reimbursements relating to its total liability for pending and unasserted potential future asbestos claims and defense costs. In calculating this amount, the Company used the estimated asbestos liability for pending and projected future claims and defense costs described above, and it also considered the amount of insurance available, the solvency risk with respect to the Company's insurance carriers, resolution of insurance coverage issues, gaps in coverage, allocation methodologies, and the terms of existing settlement agreements with insurance carriers.
	The amounts recorded by the Company for asbestos-related liabilities and insurance-related assets are based on the Company's strategies for resolving its asbestos claims, currently available information, and a number of estimates and assumptions. Key variables and assumptions include the number and type of new claims that are filed each year, the average cost of resolution of claims, the identity of defendants, the resolution of coverage issues with insurance carriers, amount of insurance, and the solvency risk with respect to the Company's insurance carriers. Many of these factors are closely linked, such that a change in one variable or assumption will impact one or more of the others, and no single variable or assumption predominately influences the determination of the Company's asbestos-related liabilities and insurance-related assets. Furthermore, predictions with respect to these variables are subject to greater uncertainty in the later portion of the projection period. Other factors that may affect the Company's liability and cash payments for asbestos-related matters include uncertainties surrounding the litigation process from jurisdiction to jurisdiction and from case to case, reforms of state or federal tort legislation and the applicability of insurance policies among subsidiaries. As a result, actual liabilities or insurance recoveries could be significantly higher or lower than those recorded if assumptions used in the Company's calculations vary significantly from actual results.
	In connection with the foregoing, during the third quarter of fiscal 2014, the Company resolved disputes with certain of its historical insurers and agreed that certain insurance proceeds would be used to establish and fund a qualified settlement fund (“QSF”), within the meaning of the Internal Revenue Code, which would be used for the resolution primarily of Grinnell asbestos liabilities of the Company. It is intended that the QSF will receive future insurance payments and proceeds from third party insurers and, in addition, will fund and manage liabilities for certain historical operations of the Company. On January 9, 2015, the Company completed a series of restructuring transactions related to the establishment and funding of a dedicated structure pursuant to which a subsidiary of the Company acquired the assets of Grinnell and transferred cash and other assets totaling approximately $278 million (not including $22 million received by the QSF during the quarter ended December 26, 2014 from historic third-party insurers in settlement of coverage disputes) to the structure. As part of the restructuring, subsidiaries in the structure assumed certain liabilities related to historic Grinnell, Scott and Figgie operations, including all historical Grinnell asbestos liabilities, and such subsidiaries purchased additional insurance by, through or from a wholly-owned subsidiary in the structure in order to supplement and enhance existing insurance assets. The structure and the QSF fully fund all historic Grinnell asbestos liabilities and provide for the efficient and streamlined management of claims related thereto.
	The Company consolidates the qualified settlement fund and related entities that were established for the purpose of managing and resolving the liabilities described above. Although the entities in the dedicated structure serve the specific purpose of managing certain liabilities, each entity in the structure is a wholly-owned indirect subsidiary of the Company, and therefore is required to be consolidated under U.S. generally accepted accounting principles.
	Tax Matters
	Tyco and its subsidiaries' income tax returns are examined periodically by various tax authorities. In connection with these examinations, tax authorities, including the IRS, have raised issues and proposed tax adjustments, in particular with respect to years preceding the 2007 Separation. The issues and proposed adjustments related to such years are generally subject to the sharing provisions of a tax sharing agreement entered in 2007 with Medtronic and TE Connectivity (the "2007 Tax Sharing Agreement") under which Tyco, Medtronic and TE Connectivity share 27%, 42% and 31%, respectively, of shared income tax liabilities that arise from adjustments made by tax authorities to Tyco's, Medtronic's and TE Connectivity's U.S. and certain non-U.S. income tax returns. The costs and expenses associated with the management of these shared tax liabilities are generally shared equally among the parties. Tyco has previously disclosed that in connection with U.S. federal tax audits, the IRS has raised a number of issues and proposed tax adjustments for periods beginning with the 1997 tax year. Although Tyco has been able to resolve substantially all of the issues and adjustments proposed by the IRS for tax years through 2007, it has not been able to resolve matters related to the treatment of certain intercompany debt transactions during the period. As a result, on June 20, 2013, Tyco received Notices of Deficiency from the IRS asserting that several of Tyco's former U.S. subsidiaries owe additional taxes of $883.3 million plus penalties of $154 million based on audits of the 1997 through 2000 tax years of Tyco and its subsidiaries as they existed at that time. In addition, Tyco received Final Partnership Administrative Adjustments for certain U.S. partnerships owned by former U.S. subsidiaries with respect to which an additional tax deficiency of approximately $30 million has been asserted. These amounts exclude interest and do not reflect the impact on subsequent periods if the IRS position described below is ultimately proved correct.
	The IRS asserted in the Notices of Deficiency that substantially all of Tyco's intercompany debt originated during the 1997 - 2000 period should not be treated as debt for U.S. federal income tax purposes, and has disallowed interest and related deductions recognized on U.S. income tax returns totaling approximately $2.9 billion. Tyco strongly disagrees with the IRS position and has filed petitions with the U.S. Tax Court contesting the IRS proposed adjustments. A trial date has been set for February 2016. Tyco believes that it has meritorious defenses for its tax filings, that the IRS positions with regard to these matters are inconsistent with the applicable tax laws and existing Treasury regulations, and that the previously reported taxes for the years in question are appropriate.
	No payments with respect to these matters would be required until the dispute is definitively resolved, which, based on the experience of other companies, could take several years. Tyco believes that its income tax reserves and the liabilities recorded in the Consolidated Balance Sheet for the tax sharing agreements continue to be appropriate. However, the ultimate resolution of these matters, and the impact of that resolution, are uncertain and could have a material impact on Tyco's financial condition, results of operations and cash flows. In particular, if the IRS is successful in asserting its claim, it would have an adverse impact on interest deductions related to the same intercompany debt in subsequent time periods, totaling approximately $6.6 billion, which is expected to be disallowed by the IRS.
	See Note 6 for additional information related to income tax matters.
	Other Matters
	As previously disclosed, SimplexGrinnell LP (“SG”), a subsidiary of the Company in the North America Installation & Services segment, has been named as a defendant in lawsuits in several jurisdictions seeking damages for SG’s alleged failure to pay prevailing wages and for other pay-related claims. Through the first quarter of fiscal 2015, the Company had recorded a total of approximately $17 million in charges related to these lawsuits, which was recorded in the Cost of services within the Consolidated Statement of Operations. During the quarter ended March 27, 2015, the Company agreed in principle to settle all outstanding lawsuits for a total of approximately $14 million.
	During the first quarter of fiscal 2015, the Company received and responded to inquiries from the U.S. Department of the Navy regarding the formulation of certain aqueous film forming foam ("AFFF") concentrates. The Company investigated such matters and ceased selling certain AFFF and other foam products pending the outcome of its investigation. During the course of the investigation, three AFFF products were removed from the Navy’s Qualified Products List ("QPL"); one AFFF product remains on the QPL. The Company has shared the results of its investigation with appropriate governmental authorities and is also communicating with the government regarding the re-qualification of these products. The government has confirmed that it considers the Company to be “presently responsible,” and that no suspension or debarment is warranted. At this time, we cannot predict the outcome of these inquiries and whether this will result in further action by the Navy or other governmental authorities, but it is possible that the Company could be required to pay material fines, consent to injunctions on future conduct, or suffer other criminal or civil penalties or adverse impacts, including being subject to lawsuits brought by private litigants, each of which may have a material adverse effect on the Company’s financial position, results of operations or cash flows.
	In addition to the foregoing, the Company is subject to claims and suits, including from time to time, contractual disputes and product and general liability claims, incidental to present and former operations, acquisitions and dispositions. With respect to many of these claims, the Company either self-insures or maintains insurance through third-parties, with varying deductibles. While the ultimate outcome of these matters cannot be predicted with certainty, the Company believes that the resolution of any such proceedings, whether the underlying claims are covered by insurance or not, will not have a material adverse effect on the Company's financial condition, results of operations or cash flows beyond amounts recorded for such matters.

Retirement_Plans

Retirement Plans	6 Months Ended
	Mar. 27, 2015
Compensation and Retirement Disclosure [Abstract]
Retirement Plans	Retirement Plans
	Defined Benefit Pension Plans—The Company sponsors a number of pension plans. The following disclosures exclude the impact of plans which are immaterial individually and in the aggregate. The net periodic benefit cost for the Company's material U.S. and non-U.S. defined benefit pension plans is as follows ($ in millions):
		U.S. Plans
		For the Quarters Ended						For the Six Months Ended
		March 27, 2015			March 28, 2014			March 27, 2015			March 28, 2014
	Service cost	$	2		$	2		$	4		$	4
	Interest cost	9			9			18			18
	Expected return on plan assets	(14		)	(12		)	(28		)	(24		)
	Amortization of net actuarial loss	2			2			4			4
	Net periodic benefit cost	$	(1	)	$	1		$	(2	)	$	2
		Non-U.S. Plans
		For the Quarters Ended						For the Six Months Ended
		March 27, 2015			March 28, 2014			March 27, 2015			March 28, 2014
	Service cost	$	3		$	2		$	5		$	5
	Interest cost	13			14			26			28
	Expected return on plan assets	(19		)	(18		)	(39		)	(37		)
	Amortization of net actuarial loss	3			3			7			6
	Net periodic benefit cost	$	—		$	1		$	(1	)	$	2
	The estimated net actuarial loss for U.S. pension benefit plans that will be amortized from accumulated other comprehensive loss into net periodic benefit cost over the current fiscal year is expected to be $9 million, and the amount for non-U.S. pension benefit plans is expected to be $14 million. Amortization of net periodic benefit cost from accumulated other comprehensive loss for the Company's pension benefit plans is recorded in Selling, general and administrative expenses, Cost of product sales, or Cost of services in the Consolidated Statements of Operations, depending on the employee job classification.
	The Company's funding policy is to make contributions in accordance with the laws and customs of the various countries in which it operates and to make discretionary voluntary contributions from time to time. The Company anticipates that it will contribute at least the minimum required to its pension plans in fiscal year 2015 of $13 million for U.S. plans and $23 million for non-U.S. plans. During the quarter ended March 27, 2015, the Company made required contributions of $3 million to its U.S. pension plans and $4 million to its non-U.S. pension plans. During the six months ended March 27, 2015, the Company made required contributions of $4 million to its U.S. pension plans and $9 million to its non-U.S. pension plans.
	Postretirement Benefit Plans—Net periodic postretirement benefit cost was not material for both periods.

Equity_and_Comprehensive_Incom

Equity and Comprehensive Income	6 Months Ended
	Mar. 27, 2015
Equity [Abstract]
Equity and Comprehensive Income	Equity and Comprehensive Income
	Authorized Share Capital
	As a result of the Merger, the Company’s authorized share capital changed. The authorized share capital of Tyco Ireland is $11,000,000 and €40,000, divided into 1,000,000,000 ordinary shares with a par value of $0.01 per share, 100,000,000 preferred shares with a par value of $0.01 per share and 40,000 ordinary A shares with a par value of €1.00 per share. The authorized share capital includes 40,000 ordinary A shares with a par value of €1.00 per share in order to satisfy statutory requirements for the incorporation of all Irish public limited companies. Tyco Ireland may issue shares subject to the maximum prescribed by its authorized share capital contained in its memorandum of association. In connection with the Merger, Tyco Ireland canceled all the outstanding treasury shares, including shares held by subsidiaries, with an offsetting reduction in Additional paid in capital.
	Issued Share Capital
	Tyco Ireland issued one ordinary share in exchange for each common share of Tyco Switzerland to the former shareholders of Tyco Switzerland. All Tyco Ireland ordinary shares issued at the effective time of the Merger were issued as fully paid-up and non-assessable.
	Dividends
	On March 4, 2015, the Board of Directors approved a quarterly dividend of $0.205 per share payable on May 20, 2015 to shareholders of record on April 24, 2015.
	On March 5, 2014, the Company's shareholders approved an annual cash dividend of $0.72 per ordinary share. Payment of the dividend was made in four quarterly installments of $0.18 from May 2014 through February 2015. As a result, during the quarter ended March 28, 2014, the Company recorded an accrued dividend of $332 million within Accrued and other current liabilities and a corresponding reduction to Additional paid in capital on the Company's Consolidated Balance Sheet.
	The timing, declaration and payment of future dividends to holders of our ordinary shares will be determined by the Company's Board of Directors and will depend upon many factors, including Tyco's financial condition and results of operations, the capital requirements of the Company's businesses, industry practice and any other relevant factors.
	Under Irish law, dividends may only be paid (and share repurchases and redemptions must generally be funded) out of “distributable reserves.” The creation of distributable reserves of Tyco Ireland was accomplished by way of a capital reduction of Tyco Ireland, which the Irish High Court approved on December 18, 2014.
	Share Repurchase Program
	The Company's Board of Directors approved $1.75 billion and $1 billion share repurchase programs in March 2014 and September 2014, respectively. During the quarter ended December 26, 2014, the Company repurchased a total of approximately 10 million shares for approximately $417 million which completed the $1.75 billion share repurchase program. No shares were repurchased during the quarter ended March 27, 2015. As of March 27, 2015, a total of approximately $1 billion in share repurchase authority remained outstanding.
	Comprehensive (Loss) Income
	Comprehensive (loss) income is comprised of the following ($ in millions):
		For the Quarters Ended						For the Six Months Ended
		March 27,			March 28,			March 27,			March 28,
		2015			2014			2015			2014
	Net income	$	165		$	207		$	326		$	479
	Foreign currency translation (1)	(176		)	(15		)	(374		)	(52		)
	Amortization of net actuarial losses (2)	5			5			11			10
	Income tax expense	(1		)	(1		)	(2		)	(3		)
	Defined benefit and post retirement plans, net of tax	4			4			9			7
	Total other comprehensive loss, net of tax	(172		)	(11		)	(365		)	(45		)
	Comprehensive (loss) income	(7		)	196			(39		)	434
	Less: comprehensive (loss) income attributable to noncontrolling interests	(2		)	—			(3		)	2
	Comprehensive (loss) income attributable to Tyco ordinary shareholders	$	(5	)	$	196		$	(36	)	$	432
	(1) Includes $20 million related to the net investment hedge for the quarter and six months ended March 27, 2015
	(2) Reclassified to net periodic benefit cost. See Note 12 Retirement Plans for additional information.
	A summary of the changes in each component of Accumulated other comprehensive loss, net of tax, for the six months ended March 27, 2015 and March 28, 2014 are as follows ($ in millions):
		Currency			Retirement			Accumulated Other
		Translation			Plans			Comprehensive Loss
		Adjustments
	Balance as of September 26, 2014	$	(693	)	$	(532	)	$	(1,225	)
	Other comprehensive loss before reclassifications, net of tax	(374		)	—			(374		)
	Amounts reclassified from accumulated other comprehensive	—			9			9
	income, net of tax
	Balance as of March 27, 2015	$	(1,067	)	$	(523	)	$	(1,590	)
		Currency			Retirement			Accumulated Other
		Translation			Plans			Comprehensive Loss
		Adjustments
	Balance as of September 27, 2013	$	(519	)	$	(468	)	$	(987	)
	Other comprehensive loss before reclassifications, net of tax	(52		)	—			(52		)
	Amounts reclassified from accumulated other comprehensive	—			7			7
	income, net of tax
	Balance as of March 28, 2014	$	(571	)	$	(461	)	$	(1,032	)

Share_Plans

Share Plans	6 Months Ended
	Mar. 27, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share Plans	Share Plans
	During the quarter ended December 26, 2014, the Company issued its annual share-based compensation grants. The total number of awards issued was approximately 2.4 million, of which 1.5 million were stock options, 0.4 million were restricted unit awards and 0.5 million were performance share unit awards. The options and restricted stock units vest in equal annual installments over a period of 4 years, and the performance share unit awards vest after a period of 3 years based on the level of attainment of the applicable performance metrics, which are determined by the Compensation and Human Resources Committee of the Board. The weighted-average grant-date fair value of the stock options, restricted unit awards and performance share unit awards was $11.77, $43.38 and $42.95, respectively. The weighted-average assumptions used in the Black-Scholes option pricing model included an expected stock price volatility of 32%, a risk free interest rate of 1.83%, an expected annual dividend per share of $0.72 and an expected option life of 5.57 years.
	The fair value of restricted stock units is determined based on the closing market price of the Company’s shares on the grant date. Performance share units, which are restricted share awards that vest dependent upon attainment of various levels of performance that equal or exceed targeted levels generally vest in their entirety 3 years from the grant date. The fair value of performance share units is determined based on the Monte Carlo valuation model. The compensation expense recognized for all restricted share awards is net of estimated forfeitures.

Consolidated_Segment_Data

Consolidated Segment Data	6 Months Ended
	Mar. 27, 2015
Segment Reporting [Abstract]
Consolidated Segment Data	Consolidated Segment Data
	Segment information is consistent with how management reviews the businesses, makes investing and resource allocation decisions and assesses operating performance. Selected information by segment is presented in the following tables ($ in millions):
		For the Quarters Ended						For the Six Months Ended
		March 27, 2015			March 28, 2014			March 27, 2015			March 28, 2014
	Net revenue(1):
	NA Installation & Services	$	944		$	939		$	1,895		$	1,896
	ROW Installation & Services	847			936			1,763			1,903
	Global Products	639			605			1,250			1,170
		$	2,430		$	2,480		$	4,908		$	4,969
	_____________________________________________________________________________
	(1)	Net revenue by operating segment excludes intercompany transactions.
		For the Quarters Ended						For the Six Months Ended
		March 27, 2015			March 28, 2014			March 27, 2015			March 28, 2014
	Operating income (loss):
	NA Installation & Services	$	119		$	99		$	224		$	216
	ROW Installation & Services (1)	60			114			130			208
	Global Products	110			107			208			193
	Corporate and Other (2)	(68		)	(61		)	(142		)	(15		)
		$	221		$	259		$	420		$	602
	_______________________________________________________________________________
	(1)	Operating income for the quarter and six months ended March 28, 2014 includes $21 million of an insurance recovery related to the improper recording of revenue in China that was previously disclosed in the fourth quarter of fiscal 2012.
	(2)	Operating income for the six months ended March 28, 2014 includes $92 million of income related to the settlement of a legacy legal matter with former management and $16 million of income related to the CIT settlement.

Inventory

Inventory	6 Months Ended
	Mar. 27, 2015
Inventory Disclosure [Abstract]
Inventory	Inventory
	Inventories consisted of the following ($ in millions):
		As of
		March 27,		September 26,
		2015		2014
	Purchased materials and manufactured parts	$	181	$	159
	Work in process	91		85
	Finished goods	405		381
	Inventories	$	677	$	625
	Inventories are recorded at the lower of cost (primarily first-in, first-out) or market value.

Property_Plant_and_Equipment

Property, Plant and Equipment	6 Months Ended
	Mar. 27, 2015
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment
	Property, plant and equipment consisted of the following ($ in millions):
		As of
		27-Mar-15			26-Sep-14
	Land	$	33		$	36
	Buildings	408			411
	Subscriber systems	2,044			2,210
	Machinery and equipment	1,253			1,265
	Construction in progress	93			90
	Accumulated depreciation	(2,615		)	(2,750		)
	Property, plant and equipment, net	$	1,216		$	1,262

Guarantees

Guarantees	6 Months Ended
	Mar. 27, 2015
Guarantees [Abstract]
Guarantees	Guarantees
	Certain of the Company's subsidiaries at the business segment level have guaranteed the performance of third-parties and provided financial guarantees for uncompleted work and financial commitments. The terms of these guarantees vary with end dates ranging from the current fiscal year through the completion of such transactions and would typically be triggered in the event of nonperformance. Performance under the guarantees, if required, would not have a material effect on the Company's financial position, results of operations or cash flows.
	There are certain guarantees or indemnifications extended among Tyco, Medtronic, TE Connectivity, ADT and Pentair in accordance with the terms of the 2007 and 2012 Separation and Distribution Agreements and Tax Sharing Agreements. These guarantees primarily relate to certain contingent tax liabilities included in the Tax Sharing Agreements. See Note 6.
	In addition, Tyco historically provided support in the form of financial and/or performance guarantees to various Medtronic, TE Connectivity, ADT and Tyco Flow Control operating entities. In connection with both the 2012 and 2007 Separations, the Company worked with the guarantee counterparties to cancel or assign these guarantees to Medtronic, TE Connectivity, ADT or Pentair, as appropriate. To the extent these guarantees were not assigned prior to the Separation dates, Tyco remained as the guarantor, but was typically indemnified by the former subsidiary. The Company's obligations related to the 2012 Separation were $3 million, which were included in Other liabilities on the Company's Consolidated Balance Sheets as of both March 27, 2015 and September 26, 2014, with an offset to Tyco's shareholders' equity on the 2012 Separation date. The Company's obligations related to the 2007 Separation were $3 million, which were included in Other liabilities on the Company's Consolidated Balance Sheets as of both March 27, 2015 and September 26, 2014, with an offset to Tyco's shareholders' equity on the 2007 Separation date.
	In disposing of assets or businesses, the Company or its subsidiaries often provides representations, warranties and/or indemnities to cover various risks including, for example, unknown damage to the assets, environmental risks involved in the sale of real estate, liability to investigate and remediate environmental contamination at waste disposal sites and manufacturing facilities and unidentified tax liabilities and legal fees related to periods prior to disposition. The Company has no reason to believe that these contingencies, if realized, would have a material adverse effect on the Company's financial position, results of operations or cash flows. The Company has recorded liabilities for known indemnifications included as part of environmental liabilities. See Note 11.
	In the normal course of business, the Company is liable for contract completion and product performance. In the opinion of management, such obligations will not significantly affect the Company's financial position, results of operations or cash flows.
	The changes in the carrying amount of the Company's warranty accrual from September 26, 2014 to March 27, 2015 were as follows ($ million):
	Balance as of September 26, 2014	$	28
	Warranties issued	12
	Changes in estimates	1
	Settlements	(6		)
	Currency translation	(1		)
	Balance as of March 27, 2015	$	34
	Warranty accruals for businesses that are included within Liabilities held for sale on the Consolidated Balance Sheets are excluded from the table above. See Note 3.

Guarantor_Financial_Statements

Guarantor Financial Statements	6 Months Ended
	Mar. 27, 2015
Condensed Financial Information Disclosure [Abstract]
Guarantor Financial Statements	Guarantor Financial Statements
	TIFSA, a 100% owned subsidiary of the Company, has public debt securities outstanding which are fully and unconditionally guaranteed by Tyco and by Tyco Fire & Security Finance SCA ("TIFSCA"), a wholly owned subsidiary of Tyco and parent company of TIFSA. The following tables present condensed consolidating financial information for Tyco, TIFSCA, TIFSA and all other subsidiaries. Condensed financial information for Tyco, TIFSCA and TIFSA on a stand-alone basis is presented using the equity method of accounting for subsidiaries.
	CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
	For the Quarter Ended March 27, 2015
	($ in millions)
		Tyco			Tyco			Tyco			Other			Consolidating			Total
		International			Fire & Security			International			Subsidiaries			Adjustments
		plc			Finance SCA			Finance S.A.
	Net revenue	$	—		$	—		$	—		$	2,430		$	—		$	2,430
	Cost of product sales	—			—			—			999			—			999
	Cost of services	—			—			—			550			—			550
	Selling, general and administrative expenses	2			—			—			646			—			648
	Restructuring and asset impairment charges, net	—			—			—			12			—			12
	Operating (loss) income	(2		)	—			—			223			—			221
	Interest income	—			—			—			4			—			4
	Interest expense	—			—			(24		)	(1		)	—			(25		)
	Other (expense) income, net	—			—			(2		)	1			—			(1		)
	Equity in net income of subsidiaries	152			158			160			—			(470		)	—
	Intercompany interest and fees	17			—			24			(41		)	—			—
	Income from continuing operations before income taxes	167			158			158			186			(470		)	199
	Income tax expense	—			—			—			(18		)	—			(18		)
	Income from continuing operations	167			158			158			168			(470		)	181
	Loss from discontinued operations, net of income taxes	—			—			—			(16		)	—			(16		)
	Net income	167			158			158			152			(470		)	165
	Less: noncontrolling interest in subsidiaries net loss	—			—			—			(2		)	—			(2		)
	Net income attributable to Tyco ordinary shareholders	$	167		$	158		$	158		$	154		$	(470	)	$	167
	CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME
	For the Quarter Ended March 27, 2015
	($ in millions)
		Tyco			Tyco			Tyco			Other			Consolidating			Total
		International			Fire & Security			International			Subsidiaries			Adjustments
		plc			Finance SCA			Finance S.A.
	Net income	$	167		$	158		$	158		$	152		$	(470	)	$	165
	Other comprehensive (loss) income, net of tax
	Foreign currency translation	(176		)	—			16			(192		)	176			(176		)
	Defined benefit and post retirement plans	4			—			—			4			(4		)	4
	Total other comprehensive (loss) income net of tax	(172		)	—			16			(188		)	172			(172		)
	Comprehensive (loss) income	(5		)	158			174			(36		)	(298		)	(7		)
	Less: comprehensive loss attributable to noncontrolling interests	—			—			—			(2		)	—			(2		)
	Comprehensive (loss) income attributable to Tyco ordinary shareholders	$	(5	)	$	158		$	174		$	(34	)	$	(298	)	$	(5	)
	CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
	For the Quarter Ended March 28, 2014
	($ in millions)
		Tyco			Tyco			Other			Consolidating			Total
		International			International			Subsidiaries			Adjustments
		Ltd.			Finance S.A.
	Net revenue	$	—		$	—		$	2,480		$	—		$	2,480
	Cost of product sales	—			—			1,003			—			1,003
	Cost of services	—			—			575			—			575
	Selling, general and administrative expenses	—			1			634			—			635
	Separation costs	—			—			1			—			1
	Restructuring and asset impairment charges, net	—			—			7			—			7
	Operating (loss) income	—			(1		)	260			—			259
	Interest income	—			—			3			—			3
	Interest expense	—			(24		)	(1		)	—			(25		)
	Other (expense) income, net	(2		)	—			1			—			(1		)
	Equity in net income of subsidiaries	199			227			—			(426		)	—
	Intercompany interest and fees	12			8			(20		)	—			—
	Income from continuing operations before income taxes	209			210			243			(426		)	236
	Income tax expense	—			—			(39		)	—			(39		)
	Equity loss in earnings of unconsolidated subsidiaries	—			—			(5		)	—			(5		)
	Income from continuing operations	209			210			199			(426		)	192
	(Loss) income from discontinued operations, net of income taxes	(2		)	—			17			—			15
	Net income	207			210			216			(426		)	207
Net income attributable to Tyco ordinary shareholders	$	207		$	210		$	216		$	(426	)	$	207
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME
For the Quarter Ended March 28, 2014
($ in millions)
	Tyco			Tyco			Other			Consolidating			Total
	International			International			Subsidiaries			Adjustments
	Ltd.			Finance S.A.
Net income	$	207		$	210		$	216		$	(426	)	$	207
Other comprehensive (loss) income, net of tax
Foreign currency translation	(15		)	—			(15		)	15			(15		)
Defined benefit and post retirement plans	4			—			4			(4		)	4
Total other comprehensive loss, net of tax	(11		)	—			(11		)	11			(11		)
Comprehensive income	196			210			205			(415		)	196
Less: comprehensive income attributable to noncontrolling interests	—			—			—			—			—
Comprehensive income attributable to Tyco ordinary shareholders	$	196		$	210		$	205		$	(415	)	$	196
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
For the Six Months Ended March 27, 2015
($ in millions)
	Tyco			Tyco			Tyco			Other			Consolidating			Total
	International			Fire & Security			International			Subsidiaries			Adjustments
	plc			Finance SCA			Finance S.A.
Net revenue	$	—		$	—		$	—		$	4,908		$	—		$	4,908
Cost of product sales	—			—			—			2,021			—			2,021
Cost of services	—			—			—			1,097			—			1,097
Selling, general and administrative expenses	5			—			1			1,294			—			1,300
Restructuring and asset impairment charges, net	—			—			—			70			—			70
Operating (loss) income	(5		)	—			(1		)	426			—			420
Interest income	—			—			—			7			—			7
Interest expense	—			—			(48		)	(1		)	—			(49		)
Other income, net	—			—			2			1			—			3
Equity in net income of subsidiaries	295			291			287			—			(873		)	—
Intercompany interest and fees	39			—			51			(90		)	—			—
Income from continuing operations before income taxes	329			291			291			343			(873		)	381
Income tax expense	—			—			—			(37		)	—			(37		)
Income from continuing operations	329			291			291			306			(873		)	344
Loss from discontinued operations, net of income taxes	—			—			—			(18		)	—			(18		)
Net income	329			291			291			288			(873		)	326
Less: noncontrolling interest in subsidiaries net loss	—			—			—			(3		)	—			(3		)
Net income attributable to Tyco ordinary shareholders	$	329		$	291		$	291		$	291		$	(873	)	$	329
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME
For the Six Months Ended March 27, 2015
($ in millions)
	Tyco			Tyco			Tyco			Other			Consolidating			Total
	International			Fire & Security			International			Subsidiaries			Adjustments
	plc			Finance SCA			Finance S.A.
Net income	$	329		$	291		$	291		$	288		$	(873	)	$	326
Other comprehensive (loss) income, net of tax
Foreign currency translation	(374		)	—			15			(389		)	374			(374		)
Defined benefit and post retirement plans	9			—			—			9			(9		)	9
Total other comprehensive (loss) income, net of tax	(365		)	—			15			(380		)	365			(365		)
Comprehensive (loss) income	(36		)	291			306			(92		)	(508		)	(39		)
Less: comprehensive loss attributable to noncontrolling interests	—			—			—			(3		)	—			(3		)
Comprehensive (loss) income attributable to Tyco ordinary shareholders	$	(36	)	$	291		$	306		$	(89	)	$	(508	)	$	(36	)
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
For the Six Months Ended March 28, 2014
($ in millions)
	Tyco			Tyco			Other			Consolidating			Total
	International			International			Subsidiaries			Adjustments
	Ltd.			Finance S.A.
Net revenue	$	—		$	—		$	4,969		$	—		$	4,969
Cost of product sales	—			—			2,001			—			2,001
Cost of services	—			—			1,150			—			1,150
Selling, general and administrative expenses	(13		)	2			1,216			—			1,205
Separation costs	—			—			1			—			1
Restructuring and asset impairment charges, net	—			—			10			—			10
Operating income (loss)	13			(2		)	591			—			602
Interest income	—			—			6			—			6
Interest expense	—			(48		)	(1		)	—			(49		)
Other (expense) income, net	(3		)	—			1			—			(2		)
Equity in net income of subsidiaries	467			511			—			(978		)	—
Intercompany interest and fees	2			17			(19		)	—			—
Income from continuing operations before income taxes	479			478			578			(978		)	557
Income tax expense	—			—			(109		)	—			(109		)
Equity loss in earnings of unconsolidated subsidiaries	—			—			(9		)	—			(9		)
Income from continuing operations	479			478			460			(978		)	439
(Loss) income from discontinued operations, net of income taxes	(2		)	—			42			—			40
Net income	477			478			502			(978		)	479
Less: noncontrolling interest in subsidiaries net income	—			—			2			—			2
Net income attributable to Tyco ordinary shareholders	$	477		$	478		$	500		$	(978	)	$	477
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME
For the Six Months Ended March 28, 2014
($ in millions)
	Tyco			Tyco			Other			Consolidating			Total
	International			International			Subsidiaries			Adjustments
	Ltd.			Finance S.A.
Net income	$	477		$	478		$	502		$	(978	)	$	479
Other comprehensive (loss) income, net of tax
Foreign currency translation	(52		)	—			(52		)	52			(52		)
Defined benefit and post retirement plans	7			—			7			(7		)	7
Total other comprehensive loss, net of tax	(45		)	—			(45		)	45			(45		)
Comprehensive income	432			478			457			(933		)	434
Less: comprehensive income attributable to noncontrolling interests	—			—			2			—			2
Comprehensive income attributable to Tyco ordinary shareholders	$	432		$	478		$	455		$	(933	)	$	432
CONDENSED CONSOLIDATING BALANCE SHEET
As of March 27, 2015
($ in millions)
	Tyco			Tyco			Tyco			Other			Consolidating			Total
	International			Fire & Security			International			Subsidiaries			Adjustments
	plc			Finance SCA			Finance S.A.
Assets
Current Assets:
Cash and cash equivalents	$	—		$	—		$	—		$	432		$	—		$	432
Accounts receivable, net	—			—			—			1,643			—			1,643
Inventories	—			—			—			677			—			677
Intercompany receivables	35			—			302			7,369			(7,706		)	—
Prepaid expenses and other current assets	1			—			71			795			—			867
Deferred income taxes	—			—			—			304			—			304
Assets held for sale	—			—			—			155			—			155
Total current assets	36			—			373			11,375			(7,706		)	4,078
Property, plant and equipment, net	—			—			—			1,216			—			1,216
Goodwill	—			—			—			4,265			—			4,265
Intangible assets, net	—			—			—			908			—			908
Investment in subsidiaries	10,846			11,053			15,805			—			(37,704		)	—
Intercompany loans receivable	—			—			2,958			5,050			(8,008		)	—
Other assets	1			—			32			1,195			—			1,228
Total Assets	$	10,883		$	11,053		$	19,168		$	24,009		$	(53,418	)	$	11,695
Liabilities and Equity
Current Liabilities:
Loans payable and current maturities of long-term debt	$	—		$	—		$	258		$	20		$	—		$	278
Accounts payable	—			—			—			735			—			735
Accrued and other current liabilities	93			—			66			1,800			—			1,959
Deferred revenue	—			—			—			405			—			405
Intercompany payables	3,463			—			3,909			334			(7,706		)	—
Liabilities held for sale	—			—			—			102			—			102
Total current liabilities	3,556			—			4,233			3,396			(7,706		)	3,479
Long-term debt	—			—			1,731			1			—			1,732
Intercompany loans payable	3,146			—			1,904			2,958			(8,008		)	—
Deferred revenue	—			—			—			315			—			315
Other liabilities	—			—			247			1,680			—			1,927
Total Liabilities	6,702			—			8,115			8,350			(15,714		)	7,453
Redeemable noncontrolling interest	—			—			—			12			—			12
Tyco Shareholders' Equity:
Ordinary shares	4			—			—			—			—			4
Other shareholders' equity	4,177			11,053			11,053			15,598			(37,704		)	4,177
Total Tyco Shareholders' Equity	4,181			11,053			11,053			15,598			(37,704		)	4,181
Nonredeemable noncontrolling interest	—			—			—			49			—			49
Total Equity	4,181			11,053			11,053			15,647			(37,704		)	4,230
Total Liabilities, Redeemable Noncontrolling Interest and Equity	$	10,883		$	11,053		$	19,168		$	24,009		$	(53,418	)	$	11,695
CONDENSED CONSOLIDATING BALANCE SHEET
As of September 26, 2014
($ in millions)
	Tyco			Tyco			Other			Consolidating			Total
	International			International			Subsidiaries			Adjustments
	Ltd.			Finance S.A.
Assets
Current Assets:
Cash and cash equivalents	$	—		$	—		$	892		$	—		$	892
Accounts receivable, net	—			—			1,734			—			1,734
Inventories	—			—			625			—			625
Intercompany receivables	18			245			8,102			(8,365		)	—
Prepaid expenses and other current assets	7			62			982			—			1,051
Deferred income taxes	—			—			304			—			304
Assets held for sale	—			—			180			—			180
Total current assets	25			307			12,819			(8,365		)	4,786
Property, plant and equipment, net	—			—			1,262			—			1,262
Goodwill	—			—			4,122			—			4,122
Intangible assets, net	—			—			712			—			712
Investment in subsidiaries	12,738			16,209			—			(28,947		)	—
Intercompany loans receivable	—			3,693			5,346			(9,039		)	—
Other assets	26			4			897			—			927
Total Assets	$	12,789		$	20,213		$	25,158		$	(46,351	)	$	11,809
Liabilities and Equity
Current Liabilities:
Loans payable and current maturities of long-term debt	$	—		$	—		$	20		$	—		$	20
Accounts payable	1			—			824			—			825
Accrued and other current liabilities	191			23			1,900			—			2,114
Deferred revenue	—			—			400			—			400
Intercompany payables	3,517			4,593			255			(8,365		)	—
Liabilities held for sale	—			—			118			—			118
Total current liabilities	3,709			4,616			3,517			(8,365		)	3,477
Long-term debt	—			1,441			2			—			1,443
Intercompany loans payable	4,180			1,888			2,971			(9,039		)	—
Deferred revenue	—			—			335			—			335
Other liabilities	253			—			1,618			—			1,871
Total Liabilities	8,142			7,945			8,443			(17,404		)	7,126
Redeemable noncontrolling interest	—			—			13			—			13
Tyco Shareholders' Equity:
Ordinary shares	208			—			—			—			208
Ordinary shares held in treasury	—			—			(2,515		)	—			(2,515		)
Other shareholders' equity	4,439			12,268			19,194			(28,947		)	6,954
Total Tyco Shareholders' Equity	4,647			12,268			16,679			(28,947		)	4,647
Nonredeemable noncontrolling interest	—			—			23			—			23
Total Equity	4,647			12,268			16,702			(28,947		)	4,670
Total Liabilities, Redeemable Noncontrolling Interest and Equity	$	12,789		$	20,213		$	25,158		$	(46,351	)	$	11,809
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
For the Six Months Ended March 27, 2015
($ in millions)
	Tyco			Tyco			Tyco			Other			Consolidating			Total
	International plc			Fire & Security			International			Subsidiaries			Adjustments
				Finance SCA			Finance S.A.
Cash Flows From Operating Activities:
Net cash provided by (used in) operating activities	$	20		$	—		$	(504	)	$	746		$	—		$	262
Net cash provided by discontinued operating activities	—			—			—			3			—			3
Cash Flows From Investing Activities:
Capital expenditures	—			—			—			(123		)	—			(123		)
Proceeds from disposal of assets	—			—			—			3			—			3
Acquisition of businesses, net of cash acquired	—			—			—			(525		)	—			(525		)
Acquisition of dealer generated customer accounts and bulk account purchases	—			—			—			(8		)	—			(8		)
Divestiture of businesses, net of cash divested	—			—			—			(1		)	—			(1		)
Net increase in intercompany loans	—			—			(59		)	—			59			—
Sales and maturities of investments	—			—			—			279			—			279
Purchases of investments	—			—			—			(288		)	—			(288		)
Increase in restricted cash	—			—			—			(39		)	—			(39		)
Other	—			—			—			(1		)	—			(1		)
Net cash used in investing activities	—			—			(59		)	(703		)	59			(703		)
Net cash used in discontinued investing activities	—			—			—			(15		)	—			(15		)
Cash Flows From Financing Activities:
Repayment of short-term debt	—			—			—			(1		)	—			(1		)
Proceeds from issuance of long-term debt	—			—			567			—			—			567
Proceeds from exercise of share options	50			—			—			7			—			57
Dividends paid	(151		)	—			—			—			—			(151		)
Repurchase of ordinary shares by treasury	—			—			—			(417		)	—			(417		)
Net intercompany loan borrowings	83			—			—			(24		)	(59		)	—
Transfer to discontinued operations	—			—			—			(12		)	—			(12		)
Payment of contingent consideration	—			—			—			(23		)	—			(23		)
Other	(2		)	—			(4		)	(17		)	—			(23		)
Net cash (used in) provided by financing activities	(20		)	—			563			(487		)	(59		)	(3		)
Net cash provided by discontinued financing activities	—			—			—			12			—			12
Effect of currency translation on cash	—			—			—			(16		)	—			(16		)
Net decrease in cash and cash equivalents	—			—			—			(460		)	—			(460		)
Cash and cash equivalents at beginning of period	—			—			—			892			—			892
Cash and cash equivalents at end of period	$	—		$	—		$	—		$	432		$	—		$	432
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
For the Six Months Ended March 28, 2014
($ in millions)
	Tyco			Tyco			Other			Consolidating			Total
	International			International			Subsidiaries			Adjustments
	Ltd.			Finance S.A.
Cash Flows From Operating Activities:
Net cash (used in) provided by operating activities	$	(20	)	$	215		$	171		$	—		$	366
Net cash provided by discontinued operating activities	—			—			77			—			77
Cash Flows From Investing Activities:
Capital expenditures	—			—			(135		)	—			(135		)
Proceeds from disposal of assets	—			—			6			—			6
Acquisition of businesses, net of cash acquired	—			—			(54		)	—			(54		)
Acquisition of dealer generated customer accounts and bulk account purchases	—			—			(16		)	—			(16		)
Net increase in intercompany loans	—			(206		)	—			206			—
Increase in investment in subsidiaries	—			(9		)	—			9			—
Sales and maturities of investments	—			—			141			—			141
Purchases of investments	—			—			(40		)	—			(40		)
Decrease in restricted cash	—			—			6			—			6
Other	—			—			—			—			—
Net cash used in investing activities	—			(215		)	(92		)	215			(92		)
Net cash used in discontinued investing activities	—			—			(57		)	—			(57		)
Cash Flows From Financing Activities:
Proceeds from issuance of short-term debt	—			715			—			—			715
Repayment of short-term debt	—			(715		)	—			—			(715		)
Proceeds from exercise of share options	—			—			62			—			62
Dividends paid	(148		)	—			—			—			(148		)
Repurchase of ordinary shares by treasury	—			—			(250		)	—			(250		)
Net intercompany loan borrowings	168			—			38			(206		)	—
Increase in equity from parent	—			—			9			(9		)	—
Transfer from discontinued operations	—			—			20			—			20
Other	—			—			(10		)	—			(10		)
Net cash provided by (used in) financing activities	20			—			(131		)	(215		)	(326		)
Net cash used in discontinued financing activities	—			—			(20		)	—			(20		)
Effect of currency translation on cash	—			—			(16		)	—			(16		)
Net decrease in cash and cash equivalents	—			—			(68		)	—			(68		)
Cash and cash equivalents at beginning of period	—			—			563			—			563
Cash and cash equivalents at end of period	$	—		$	—		$	495		$	—		$	495

Basis_of_Presentation_and_Summ1

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Mar. 27, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation—The Consolidated Financial Statements included herein are unaudited, but in the opinion of management, such financial statements include all adjustments, consisting of normal recurring adjustments, necessary to summarize fairly the Company's financial position, results of operations and cash flows for the interim period. The unaudited Consolidated Financial Statements include the consolidated results of Tyco International plc, a corporation organized under the laws of Ireland, and its subsidiaries (Tyco and all its subsidiaries, hereinafter collectively referred to as the "Company" or "Tyco"). The unaudited Consolidated Financial Statements have been prepared in United States dollars ("USD") and in accordance with the instructions to Form 10-Q under the Securities and Exchange Act of 1934, as amended. The results reported in these unaudited Consolidated Financial Statements should not be taken as indicative of results that may be expected for the entire year. These financial statements should be read in conjunction with the Consolidated Financial Statements and accompanying notes contained in the Company's Annual Report on Form 10-K for the fiscal year ended September 26, 2014 (the "2014 Form 10-K").
Reclassifications	Reclassifications - Certain prior period amounts have been reclassified to conform with current period presentation. The Company has reclassified several businesses in the Rest of World ("ROW") Installation & Services segment to (Loss) income from discontinued operations in the Consolidated Statements of Operations and the assets and liabilities as held for sale within the Consolidated Balance Sheets for all periods presented as they satisfied the criteria to be presented as discontinued operations. In addition, the Company has reclassified the assets and liabilities of several businesses in the ROW Installation & Services segment as held for sale during the quarter ended March 27, 2015. One of these businesses satisfied the criteria to be presented as discontinued operations and has been reflected as such in the Consolidated Statements of Operations for all periods presented. See Note 3.
Recently Adopted and Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements - In April 2014, the FASB issued authoritative guidance to change the criteria for reporting discontinued operations. Under the new guidance, only disposals representing a strategic shift in a company's operations and financial results should be reported as discontinued operations, with expanded disclosures. In addition, disclosure of the pre-tax income attributable to a disposal of a significant part of an organization that does not qualify as a discontinued operation is required. This guidance is effective for Tyco in the first quarter of fiscal 2016, with early adoption permitted only for disposals that have not been reported in financial statements previously issued or available for issuance. The Company is currently assessing the impact, if any, the guidance will have upon adoption.
	In May 2014, the FASB issued authoritative guidance for revenue from contracts with customers, which provides a single comprehensive revenue recognition model to apply in determining how and when to recognize revenue. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. When applying the new revenue model to contracts with customers the guidance requires five steps to be applied, which include: 1) identify the contract(s) with a customer, 2) identify the performance obligations in the contract, 3) determine the transaction price, 4) allocate the transaction price to the performance obligations in the contract and 5) recognize revenue when (or as) the entity satisfies a performance obligation. The guidance also requires both quantitative and qualitative disclosures, which are more comprehensive than existing revenue standards. The disclosures are intended to enable financial statement users to understand the nature, timing and uncertainty of revenue and the related cash flow. This guidance will be effective for Tyco in the first quarter of fiscal 2018, with early adoption not permitted. The Company is currently assessing the impact the guidance will have upon adoption.

Divestitures_Tables

Divestitures (Tables)	6 Months Ended
	Mar. 27, 2015
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures	The components of (loss) income from discontinued operations, net of income taxes are as follows ($ in millions):
		For the Quarters Ended						For the Six Months Ended
		27-Mar-15			28-Mar-14			27-Mar-15			28-Mar-14
	Net revenue	$	5		$	152		$	10		$	310
	Pre-tax (loss) income from discontinued operations	(6		)	20			(9		)	52
	Pre-tax separation loss included within discontinued operations (See Note 2)	—			(1		)	—			(1		)
	Pre-tax (loss) gain on sale of discontinued operations	—			(4		)	1			(4		)
	Income tax expense	(10		)	—			(10		)	(7		)
	(Loss) income from discontinued operations, net of income taxes	$	(16	)	$	15		$	(18	)	$	40
	Balance sheet information for the discontinued operations as of March 27, 2015 and September 26, 2014 was as follows ($ in millions):
		As of
		27-Mar-15			26-Sep-14
	Accounts receivable, net	$	20		$	26
	Inventories	6			7
	Prepaid expenses and other current assets	95			107
	Deferred income taxes	3			3
	Property, plant and equipment, net	6			6
	Goodwill	3			3
	Intangible assets, net	21			25
	Other assets	1			3
	Total assets	$	155		$	180
	Accounts payable	38			48
	Accrued and other current liabilities	55			62
	Deferred revenue	2			2
	Other liabilities	7			6
	Total liabilities	$	102		$	118

Restructuring_and_Asset_Impair1

Restructuring and Asset Impairment Charges, Net (Tables)	6 Months Ended
	Mar. 27, 2015
Restructuring Cost and Reserve [Line Items]
Disclosure of the restructuring reserve by balance sheet classification	As of March 27, 2015 and September 26, 2014, restructuring reserves related to all actions were included in the Company's Consolidated Balance Sheets as follows ($ in millions):
		As of
		March 27,			September 26, 2014
		2015
	Accrued and other current liabilities	$	90		$	83
	Other liabilities	15			16
	Total	$	105		$	99
2015 Actions
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	The Company recorded restructuring and asset impairment charges by action as follows ($ in millions):
		For the Quarters Ended						For the Six Months Ended
		27-Mar-15			28-Mar-14			27-Mar-15		28-Mar-14
	2015 actions	$	9		$	—		$	58	$	—
	2014 actions	4			8			10		9
	2013 and prior actions	(1		)	(1		)	2		1
	Total	$	12		$	7		$	70	$	10
	2015 Actions
	Restructuring and asset impairment charges, net, during the quarter and six months ended March 27, 2015 related to the 2015 actions are as follows ($ in millions):
		For the Quarter Ended March 27, 2015
		Employee
		Severance and
		Benefits
	NA Installation & Services	$	4
	ROW Installation & Services	4
	Global Products	1
	Total	$	9
		For the Six Months Ended March 27, 2015
		Employee			Facility Exit and Other Charges			Total
		Severance and
		Benefits
	NA Installation & Services	$	26		$	—		$	26
	ROW Installation & Services	14			5			19
	Global Products	3			—			3
	Corporate and Other	10			—			10
	Total	$	53		$	5		$	58
Schedule of restructuring reserve by type of cost	The rollforward of the reserves from September 26, 2014 to March 27, 2015 is as follows ($ in millions):
	Balance as of September 26, 2014	$	—
	Charges	60
	Reversals	(2		)
	Utilization	(25		)
	Currency translation	(1		)
	Balance as of March 27, 2015	$	32
Program 2014
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	Restructuring and asset impairment charges, net, during the quarters and six months ended March 27, 2015 and March 28, 2014 related to the 2014 actions are as follows ($ in millions):
		For the Quarter Ended			For the Quarter Ended
		27-Mar-15			28-Mar-14
		Employee			Employee
		Severance and			Severance and
		Benefits			Benefits
	NA Installation & Services	$	—		$	3
	ROW Installation & Services	—			4
	Global Products	4			1
	Total	$	4		$	8
		For the Six Months Ended			For the Six Months Ended
		27-Mar-15			28-Mar-14
		Employee			Employee
		Severance and			Severance and
		Benefits			Benefits
	NA Installation & Services	$	1		$	3
	ROW Installation & Services	—			5
	Global Products	9			1
	Total	$	10		$	9
	Restructuring and asset impairment charges, net, incurred cumulative to date from initiation of the 2014 actions are as follows ($ in millions):
		Employee			Facility Exit			Charges Reflected in SG&A		Total
		Severance and			and Other
		Benefits			Charges
	NA Installation & Services	$	17		$	—		$	—	$	17
	ROW Installation & Services	18			5			—		23
	Global Products	12			—			2		14
	Total	$	47		$	5		$	2	$	54
Schedule of restructuring reserve by type of cost	The rollforward of the reserves from September 26, 2014 to March 27, 2015 is as follows ($ in millions):
	Balance as of September 26, 2014	$	29
	Charges	10
	Utilization	(14		)
	Currency translation	(2		)
	Balance as of March 27, 2015	$	23

Income_Taxes_Tables

Income Taxes (Tables)	6 Months Ended
	Mar. 27, 2015
Income Tax Disclosure [Abstract]
Disclosure of income tax examinations	Open tax years in significant jurisdictions included in continuing operations are as follows:
	Jurisdiction	Years Open
		To Audit
	Australia	2004-2014
	Canada	2006-2014
	Germany	2005-2014
	Ireland	2010-2014
	Switzerland	2005-2014
	United Kingdom	2012-2014
	United States	1997-2014
Summary of net receivables and liabilities related to the 2012 and 2007 Tax Sharing Agreements	he receivables and liabilities related to the 2012 and 2007 Tax Sharing Agreements as of March 27, 2015 and September 26, 2014, are as follows ($ in millions):
		2012 Tax Sharing Agreement						2007 Tax Sharing Agreement
		As of						As of
		27-Mar-15			26-Sep-14			27-Mar-15			26-Sep-14
	Tax sharing agreement related receivables:
	Prepaid expenses and other current assets	$	—		$	—		$	3		$	3
	Other assets	—			—			24			23
		—			—			27			26
	Tax sharing agreement related liabilities:
	Accrued and other current liabilities	—			—			(21		)	(21		)
	Other liabilities	(46		)	(46		)	(194		)	(194		)
		(46		)	(46		)	(215		)	(215		)
	Net liability	$	(46	)	$	(46	)	$	(188	)	$	(189	)

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	6 Months Ended
	Mar. 27, 2015
Earnings Per Share [Abstract]
Basic and diluted earnings per share	The reconciliations between basic and diluted earnings per share attributable to Tyco ordinary shareholders are as follows (in millions, except per share data):
		For the Quarter Ended					For the Quarter Ended
		27-Mar-15					28-Mar-14
		Income		Shares	Per Share		Income		Shares	Per Share
					Amount					Amount
	Basic earnings per share attributable to Tyco ordinary shareholders:
	Income from continuing operations	$	183	420	$	0.44	$	192	461	$	0.41
	Share options and restricted share awards	—		7			—		8
	Diluted earnings per share attributable to Tyco ordinary shareholders:
	Income from continuing operations attributable to Tyco ordinary shareholders, giving effect to dilutive adjustments	$	183	427	$	0.43	$	192	469	$	0.41
		For the Six Months Ended					For the Six Months Ended
		27-Mar-15					28-Mar-14
		Income		Shares	Per Share		Income		Shares	Per Share
					Amount					Amount
	Basic earnings per share attributable to Tyco ordinary shareholders:
	Income from continuing operations	$	347	420	$	0.83	$	437	462	$	0.94
	Share options and restricted share awards	—		7			—		8
	Diluted earnings per share attributable to Tyco ordinary shareholders:
	Income from continuing operations attributable to Tyco ordinary shareholders, giving effect to dilutive adjustments	$	347	427	$	0.81	$	437	470	$	0.93

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Mar. 27, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Rollforward of goodwill by segment	The changes in the carrying amount of goodwill by segment are as follows ($ in millions):
		NA Installation &			ROW			Global			Total
		Services			Installation &			Products
					Services
	Gross goodwill	$	2,104		$	1,991		$	1,824		$	5,919
	Accumulated impairment	(126		)	(1,068		)	(567		)	(1,761		)
	Carrying amount of goodwill as of September 27, 2013	1,978			923			1,257			4,158
	2014 activity:
	Acquisitions/ purchase accounting adjustments	10			15			(4		)	21
	Currency translation	(12		)	(34		)	(11		)	(57		)
	Gross goodwill	$	2,102		$	1,972		$	1,809		$	5,883
	Accumulated impairment	(126		)	(1,068		)	(567		)	(1,761		)
	Carrying amount of goodwill as of September 26, 2014	1,976			904			1,242			4,122
	2015 activity:
	Acquisitions / purchase accounting adjustments	15			34			275			324
	Currency translation	(20		)	(128		)	(33		)	(181		)
	Gross goodwill	$	2,097		$	1,878		$	2,051		$	6,026
	Accumulated impairment	(126		)	(1,068		)	(567		)	(1,761		)
	Carrying amount of goodwill as of March 27, 2015	$	1,971		$	810		$	1,484		$	4,265
Schedule of intangible assets	The following table sets forth the gross carrying amount and accumulated amortization of the Company's intangible assets as of March 27, 2015 and September 26, 2014 ($ in millions):
		As of
		27-Mar-15						26-Sep-14
		Gross			Accumulated			Gross			Accumulated
		Carrying			Amortization			Carrying			Amortization
		Amount						Amount
	Amortizable:
	Contracts and related customer relationships	$	1,377		$	1,040		$	1,400		$	1,113
	Intellectual property	768			497			608			487
	Other	10			7			29			15
	Total	$	2,155		$	1,544		$	2,037		$	1,615
	Non-Amortizable:
	Intellectual property	$	212					$	214
	Franchise rights	76						76
	Other	9						—
	Total	$	297					$	290

Debt_Tables

Debt (Tables)	6 Months Ended
	Mar. 27, 2015
Debt Disclosure [Abstract]
Carrying value of debt	Debt as of March 27, 2015 and September 26, 2014 is as follows ($ in millions):
		As of
		27-Mar-15		26-Sep-14
	3.375% public notes due 2015 (1)	$	258	$	258
	3.75% public notes due 2018	67		67
	8.5% public notes due 2019	364		364
	7.0% public notes due 2019	245		245
	6.875% public notes due 2021	465		465
	4.625% public notes due 2023	42		42
	1.375% public notes due 2025	548		—
	Other (2)	21		22
	Total debt	2,010		1,463
	Less current portion	278		20
	Long-term debt	$	1,732	$	1,443
	_______________________________________________________________________________
	(1) $258 million of 3.375% public notes due October 2015 is included in the current portion of debt as of March 27, 2015.
	(2) $20 million of the amount shown as other is included in the current portion of the Company's total debt as of both March 27, 2015 and September 26, 2014.

Financial_Instruments_Tables

Financial Instruments (Tables)	6 Months Ended
	Mar. 27, 2015
Financial Instruments, Owned, at Fair Value [Abstract]
Assets measured at fair value on a recurring basis	The following table presents the Company's hierarchy for its assets measured at fair value on a recurring basis as of March 27, 2015 and September 26, 2014 ($ in millions):
								Consolidated Balance Sheet
								Classification
		As of March 27, 2015						Prepaids and		Other Assets
								Other Current
	Investment Assets:	Level 1		Level 2		Total		Assets
	Available-for-sale securities:
	Exchange traded funds (fixed income) (1)	$	198	$	—	$	198	$	—	$	198
	Exchange traded funds (equity) (1)	84		—		84		—		84
	Trading securities:
	Exchange traded funds (equity)	63		—		63		63		—
		$	345	$	—	$	345	$	63	$	282
	(1) Classified as restricted investments. See Note 11.
								Consolidated Balance Sheet
								Classification
		As of September 26, 2014						Prepaids and
								Other Current
	Investment Assets:	Level 1		Level 2		Total		Assets
	Time deposits	$	275	$	—	$	275	$	275
	Trading Securities:
	Exchange traded funds (equity)	62		—		62		62
		$	337	$	—	$	337	$	337

Retirement_Plans_Tables

Retirement Plans (Tables) (Defined Benefit Pension Plans)	6 Months Ended
	Mar. 27, 2015
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Changes in net periodic benefit cost for material U.S. and non-U.S. defined benefit pension plans	Defined Benefit Pension Plans—The Company sponsors a number of pension plans. The following disclosures exclude the impact of plans which are immaterial individually and in the aggregate. The net periodic benefit cost for the Company's material U.S. and non-U.S. defined benefit pension plans is as follows ($ in millions):
		U.S. Plans
		For the Quarters Ended						For the Six Months Ended
		March 27, 2015			March 28, 2014			March 27, 2015			March 28, 2014
	Service cost	$	2		$	2		$	4		$	4
	Interest cost	9			9			18			18
	Expected return on plan assets	(14		)	(12		)	(28		)	(24		)
	Amortization of net actuarial loss	2			2			4			4
	Net periodic benefit cost	$	(1	)	$	1		$	(2	)	$	2
		Non-U.S. Plans
		For the Quarters Ended						For the Six Months Ended
		March 27, 2015			March 28, 2014			March 27, 2015			March 28, 2014
	Service cost	$	3		$	2		$	5		$	5
	Interest cost	13			14			26			28
	Expected return on plan assets	(19		)	(18		)	(39		)	(37		)
	Amortization of net actuarial loss	3			3			7			6
	Net periodic benefit cost	$	—		$	1		$	(1	)	$	2

Equity_and_Comprehensive_Incom1

Equity and Comprehensive Income (Tables)	6 Months Ended
	Mar. 27, 2015													Mar. 28, 2014
Equity [Abstract]
Comprehensive Income (Loss)	Comprehensive (Loss) Income
	Comprehensive (loss) income is comprised of the following ($ in millions):
		For the Quarters Ended						For the Six Months Ended
		March 27,			March 28,			March 27,			March 28,
		2015			2014			2015			2014
	Net income	$	165		$	207		$	326		$	479
	Foreign currency translation (1)	(176		)	(15		)	(374		)	(52		)
	Amortization of net actuarial losses (2)	5			5			11			10
	Income tax expense	(1		)	(1		)	(2		)	(3		)
	Defined benefit and post retirement plans, net of tax	4			4			9			7
	Total other comprehensive loss, net of tax	(172		)	(11		)	(365		)	(45		)
	Comprehensive (loss) income	(7		)	196			(39		)	434
	Less: comprehensive (loss) income attributable to noncontrolling interests	(2		)	—			(3		)	2
	Comprehensive (loss) income attributable to Tyco ordinary shareholders	$	(5	)	$	196		$	(36	)	$	432
	(1) Includes $20 million related to the net investment hedge for the quarter and six months ended March 27, 2015
	(2) Reclassified to net periodic benefit cost. See Note 12 Retirement Plans for additional information.
Components of accumulated other comprehensive (loss) income	A summary of the changes in each component of Accumulated other comprehensive loss, net of tax, for the six months ended March 27, 2015 and March 28, 2014 are as follows ($ in millions):
															Currency			Retirement			Accumulated Other
		Currency			Retirement			Accumulated Other							Translation			Plans			Comprehensive Loss
		Translation			Plans			Comprehensive Loss							Adjustments
		Adjustments												Balance as of September 27, 2013	$	(519	)	$	(468	)	$	(987	)
	Balance as of September 26, 2014	$	(693	)	$	(532	)	$	(1,225	)				Other comprehensive loss before reclassifications, net of tax	(52		)	—			(52		)
	Other comprehensive loss before reclassifications, net of tax	(374		)	—			(374		)
														Amounts reclassified from accumulated other comprehensive	—			7			7
	Amounts reclassified from accumulated other comprehensive	—			9			9						income, net of tax
	income, net of tax													Balance as of March 28, 2014	$	(571	)	$	(461	)	$	(1,032	)
	Balance as of March 27, 2015	$	(1,067	)	$	(523	)	$	(1,590	)

Consolidated_Segment_Data_Tabl

Consolidated Segment Data (Tables)	6 Months Ended
	Mar. 27, 2015
Segment Reporting [Abstract]
Net revenue and Operating income (loss), by segment	Selected information by segment is presented in the following tables ($ in millions):
		For the Quarters Ended						For the Six Months Ended
		March 27, 2015			March 28, 2014			March 27, 2015			March 28, 2014
	Net revenue(1):
	NA Installation & Services	$	944		$	939		$	1,895		$	1,896
	ROW Installation & Services	847			936			1,763			1,903
	Global Products	639			605			1,250			1,170
		$	2,430		$	2,480		$	4,908		$	4,969
	_____________________________________________________________________________
	(1)	Net revenue by operating segment excludes intercompany transactions.
		For the Quarters Ended						For the Six Months Ended
		March 27, 2015			March 28, 2014			March 27, 2015			March 28, 2014
	Operating income (loss):
	NA Installation & Services	$	119		$	99		$	224		$	216
	ROW Installation & Services (1)	60			114			130			208
	Global Products	110			107			208			193
	Corporate and Other (2)	(68		)	(61		)	(142		)	(15		)
		$	221		$	259		$	420		$	602
	_______________________________________________________________________________
	(1)	Operating income for the quarter and six months ended March 28, 2014 includes $21 million of an insurance recovery related to the improper recording of revenue in China that was previously disclosed in the fourth quarter of fiscal 2012.
	(2)	Operating income for the six months ended March 28, 2014 includes $92 million of income related to the settlement of a legacy legal matter with former management and $16 million of income related to the CIT settlement.

Inventory_Tables

Inventory (Tables)	6 Months Ended
	Mar. 27, 2015
Inventory Disclosure [Abstract]
Inventory	Inventories consisted of the following ($ in millions):
		As of
		March 27,		September 26,
		2015		2014
	Purchased materials and manufactured parts	$	181	$	159
	Work in process	91		85
	Finished goods	405		381
	Inventories	$	677	$	625

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	6 Months Ended
	Mar. 27, 2015
Property, Plant and Equipment [Abstract]
Schedule of property, plant and equipment	Property, plant and equipment consisted of the following ($ in millions):
		As of
		27-Mar-15			26-Sep-14
	Land	$	33		$	36
	Buildings	408			411
	Subscriber systems	2,044			2,210
	Machinery and equipment	1,253			1,265
	Construction in progress	93			90
	Accumulated depreciation	(2,615		)	(2,750		)
	Property, plant and equipment, net	$	1,216		$	1,262

Guarantees_Tables

Guarantees (Tables)	6 Months Ended
	Mar. 27, 2015
Guarantees [Abstract]
Product warranty accrual	In the opinion of management, such obligations will not significantly affect the Company's financial position, results of operations or cash flows.
	The changes in the carrying amount of the Company's warranty accrual from September 26, 2014 to March 27, 2015 were as follows ($ million):
	Balance as of September 26, 2014	$	28
	Warranties issued	12
	Changes in estimates	1
	Settlements	(6		)
	Currency translation	(1		)
	Balance as of March 27, 2015	$	34

Guarantor_Financial_Statements1

Guarantor Financial Statements (Tables)	6 Months Ended
	Mar. 27, 2015
Condensed Financial Information Disclosure [Abstract]
Condensed Consolidating Statement of Operations	CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
	For the Quarter Ended March 28, 2014
	($ in millions)
		Tyco			Tyco			Other			Consolidating			Total
		International			International			Subsidiaries			Adjustments
		Ltd.			Finance S.A.
	Net revenue	$	—		$	—		$	2,480		$	—		$	2,480
	Cost of product sales	—			—			1,003			—			1,003
	Cost of services	—			—			575			—			575
	Selling, general and administrative expenses	—			1			634			—			635
	Separation costs	—			—			1			—			1
	Restructuring and asset impairment charges, net	—			—			7			—			7
	Operating (loss) income	—			(1		)	260			—			259
	Interest income	—			—			3			—			3
	Interest expense	—			(24		)	(1		)	—			(25		)
	Other (expense) income, net	(2		)	—			1			—			(1		)
	Equity in net income of subsidiaries	199			227			—			(426		)	—
	Intercompany interest and fees	12			8			(20		)	—			—
	Income from continuing operations before income taxes	209			210			243			(426		)	236
	Income tax expense	—			—			(39		)	—			(39		)
	Equity loss in earnings of unconsolidated subsidiaries	—			—			(5		)	—			(5		)
	Income from continuing operations	209			210			199			(426		)	192
	(Loss) income from discontinued operations, net of income taxes	(2		)	—			17			—			15
	Net income	207			210			216			(426		)	207
	Net income attributable to Tyco ordinary shareholders	$	207		$	210		$	216		$	(426	)	$	207
	CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
	For the Quarter Ended March 27, 2015
	($ in millions)
		Tyco			Tyco			Tyco			Other			Consolidating			Total
		International			Fire & Security			International			Subsidiaries			Adjustments
		plc			Finance SCA			Finance S.A.
	Net revenue	$	—		$	—		$	—		$	2,430		$	—		$	2,430
	Cost of product sales	—			—			—			999			—			999
	Cost of services	—			—			—			550			—			550
	Selling, general and administrative expenses	2			—			—			646			—			648
	Restructuring and asset impairment charges, net	—			—			—			12			—			12
	Operating (loss) income	(2		)	—			—			223			—			221
	Interest income	—			—			—			4			—			4
	Interest expense	—			—			(24		)	(1		)	—			(25		)
	Other (expense) income, net	—			—			(2		)	1			—			(1		)
	Equity in net income of subsidiaries	152			158			160			—			(470		)	—
	Intercompany interest and fees	17			—			24			(41		)	—			—
	Income from continuing operations before income taxes	167			158			158			186			(470		)	199
	Income tax expense	—			—			—			(18		)	—			(18		)
	Income from continuing operations	167			158			158			168			(470		)	181
	Loss from discontinued operations, net of income taxes	—			—			—			(16		)	—			(16		)
	Net income	167			158			158			152			(470		)	165
	Less: noncontrolling interest in subsidiaries net loss	—			—			—			(2		)	—			(2		)
	Net income attributable to Tyco ordinary shareholders	$	167		$	158		$	158		$	154		$	(470	)	$	167
	CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
	For the Six Months Ended March 27, 2015
	($ in millions)
		Tyco			Tyco			Tyco			Other			Consolidating			Total
		International			Fire & Security			International			Subsidiaries			Adjustments
		plc			Finance SCA			Finance S.A.
	Net revenue	$	—		$	—		$	—		$	4,908		$	—		$	4,908
	Cost of product sales	—			—			—			2,021			—			2,021
	Cost of services	—			—			—			1,097			—			1,097
	Selling, general and administrative expenses	5			—			1			1,294			—			1,300
	Restructuring and asset impairment charges, net	—			—			—			70			—			70
	Operating (loss) income	(5		)	—			(1		)	426			—			420
	Interest income	—			—			—			7			—			7
	Interest expense	—			—			(48		)	(1		)	—			(49		)
	Other income, net	—			—			2			1			—			3
Equity in net income of subsidiaries	295			291			287			—			(873		)	—
Intercompany interest and fees	39			—			51			(90		)	—			—
Income from continuing operations before income taxes	329			291			291			343			(873		)	381
Income tax expense	—			—			—			(37		)	—			(37		)
Income from continuing operations	329			291			291			306			(873		)	344
Loss from discontinued operations, net of income taxes	—			—			—			(18		)	—			(18		)
Net income	329			291			291			288			(873		)	326
Less: noncontrolling interest in subsidiaries net loss	—			—			—			(3		)	—			(3		)
Net income attributable to Tyco ordinary shareholders	$	329		$	291		$	291		$	291		$	(873	)	$	329
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
For the Six Months Ended March 28, 2014
($ in millions)
	Tyco			Tyco			Other			Consolidating			Total
	International			International			Subsidiaries			Adjustments
	Ltd.			Finance S.A.
Net revenue	$	—		$	—		$	4,969		$	—		$	4,969
Cost of product sales	—			—			2,001			—			2,001
Cost of services	—			—			1,150			—			1,150
Selling, general and administrative expenses	(13		)	2			1,216			—			1,205
Separation costs	—			—			1			—			1
Restructuring and asset impairment charges, net	—			—			10			—			10
Operating income (loss)	13			(2		)	591			—			602
Interest income	—			—			6			—			6
Interest expense	—			(48		)	(1		)	—			(49		)
Other (expense) income, net	(3		)	—			1			—			(2		)
Equity in net income of subsidiaries	467			511			—			(978		)	—
Intercompany interest and fees	2			17			(19		)	—			—
Income from continuing operations before income taxes	479			478			578			(978		)	557
Income tax expense	—			—			(109		)	—			(109		)
Equity loss in earnings of unconsolidated subsidiaries	—			—			(9		)	—			(9		)
Income from continuing operations	479			478			460			(978		)	439
(Loss) income from discontinued operations, net of income taxes	(2		)	—			42			—			40
Net income	477			478			502			(978		)	479
Less: noncontrolling interest in subsidiaries net income	—			—			2			—			2
Net income attributable to Tyco ordinary shareholders	$	477		$	478		$	500		$	(978	)	$	477
Condensed Consolidating Statement of Comprehensive Income	CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME
	For the Six Months Ended March 27, 2015
	($ in millions)
		Tyco			Tyco			Tyco			Other			Consolidating			Total
		International			Fire & Security			International			Subsidiaries			Adjustments
		plc			Finance SCA			Finance S.A.
	Net income	$	329		$	291		$	291		$	288		$	(873	)	$	326
	Other comprehensive (loss) income, net of tax
	Foreign currency translation	(374		)	—			15			(389		)	374			(374		)
	Defined benefit and post retirement plans	9			—			—			9			(9		)	9
	Total other comprehensive (loss) income, net of tax	(365		)	—			15			(380		)	365			(365		)
	Comprehensive (loss) income	(36		)	291			306			(92		)	(508		)	(39		)
	Less: comprehensive loss attributable to noncontrolling interests	—			—			—			(3		)	—			(3		)
	Comprehensive (loss) income attributable to Tyco ordinary shareholders	$	(36	)	$	291		$	306		$	(89	)	$	(508	)	$	(36	)
	CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME
	For the Quarter Ended March 27, 2015
	($ in millions)
		Tyco			Tyco			Tyco			Other			Consolidating			Total
		International			Fire & Security			International			Subsidiaries			Adjustments
		plc			Finance SCA			Finance S.A.
	Net income	$	167		$	158		$	158		$	152		$	(470	)	$	165
	Other comprehensive (loss) income, net of tax
	Foreign currency translation	(176		)	—			16			(192		)	176			(176		)
	Defined benefit and post retirement plans	4			—			—			4			(4		)	4
	Total other comprehensive (loss) income net of tax	(172		)	—			16			(188		)	172			(172		)
	Comprehensive (loss) income	(5		)	158			174			(36		)	(298		)	(7		)
	Less: comprehensive loss attributable to noncontrolling interests	—			—			—			(2		)	—			(2		)
	Comprehensive (loss) income attributable to Tyco ordinary shareholders	$	(5	)	$	158		$	174		$	(34	)	$	(298	)	$	(5	)
	CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME
	For the Six Months Ended March 28, 2014
	($ in millions)
		Tyco			Tyco			Other			Consolidating			Total
		International			International			Subsidiaries			Adjustments
		Ltd.			Finance S.A.
	Net income	$	477		$	478		$	502		$	(978	)	$	479
	Other comprehensive (loss) income, net of tax
	Foreign currency translation	(52		)	—			(52		)	52			(52		)
	Defined benefit and post retirement plans	7			—			7			(7		)	7
	Total other comprehensive loss, net of tax	(45		)	—			(45		)	45			(45		)
	Comprehensive income	432			478			457			(933		)	434
	Less: comprehensive income attributable to noncontrolling interests	—			—			2			—			2
	Comprehensive income attributable to Tyco ordinary shareholders	$	432		$	478		$	455		$	(933	)	$	432
	CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME
	For the Quarter Ended March 28, 2014
	($ in millions)
		Tyco			Tyco			Other			Consolidating			Total
		International			International			Subsidiaries			Adjustments
		Ltd.			Finance S.A.
	Net income	$	207		$	210		$	216		$	(426	)	$	207
	Other comprehensive (loss) income, net of tax
	Foreign currency translation	(15		)	—			(15		)	15			(15		)
	Defined benefit and post retirement plans	4			—			4			(4		)	4
	Total other comprehensive loss, net of tax	(11		)	—			(11		)	11			(11		)
	Comprehensive income	196			210			205			(415		)	196
	Less: comprehensive income attributable to noncontrolling interests	—			—			—			—			—
	Comprehensive income attributable to Tyco ordinary shareholders	$	196		$	210		$	205		$	(415	)	$	196
Condensed Consolidating Balance Sheet	CONDENSED CONSOLIDATING BALANCE SHEET
	As of March 27, 2015
	($ in millions)
		Tyco			Tyco			Tyco			Other			Consolidating			Total
		International			Fire & Security			International			Subsidiaries			Adjustments
		plc			Finance SCA			Finance S.A.
	Assets
	Current Assets:
	Cash and cash equivalents	$	—		$	—		$	—		$	432		$	—		$	432
	Accounts receivable, net	—			—			—			1,643			—			1,643
	Inventories	—			—			—			677			—			677
	Intercompany receivables	35			—			302			7,369			(7,706		)	—
	Prepaid expenses and other current assets	1			—			71			795			—			867
	Deferred income taxes	—			—			—			304			—			304
	Assets held for sale	—			—			—			155			—			155
	Total current assets	36			—			373			11,375			(7,706		)	4,078
	Property, plant and equipment, net	—			—			—			1,216			—			1,216
	Goodwill	—			—			—			4,265			—			4,265
	Intangible assets, net	—			—			—			908			—			908
	Investment in subsidiaries	10,846			11,053			15,805			—			(37,704		)	—
	Intercompany loans receivable	—			—			2,958			5,050			(8,008		)	—
	Other assets	1			—			32			1,195			—			1,228
	Total Assets	$	10,883		$	11,053		$	19,168		$	24,009		$	(53,418	)	$	11,695
	Liabilities and Equity
	Current Liabilities:
	Loans payable and current maturities of long-term debt	$	—		$	—		$	258		$	20		$	—		$	278
	Accounts payable	—			—			—			735			—			735
	Accrued and other current liabilities	93			—			66			1,800			—			1,959
	Deferred revenue	—			—			—			405			—			405
	Intercompany payables	3,463			—			3,909			334			(7,706		)	—
	Liabilities held for sale	—			—			—			102			—			102
	Total current liabilities	3,556			—			4,233			3,396			(7,706		)	3,479
	Long-term debt	—			—			1,731			1			—			1,732
	Intercompany loans payable	3,146			—			1,904			2,958			(8,008		)	—
	Deferred revenue	—			—			—			315			—			315
	Other liabilities	—			—			247			1,680			—			1,927
	Total Liabilities	6,702			—			8,115			8,350			(15,714		)	7,453
	Redeemable noncontrolling interest	—			—			—			12			—			12
	Tyco Shareholders' Equity:
	Ordinary shares	4			—			—			—			—			4
	Other shareholders' equity	4,177			11,053			11,053			15,598			(37,704		)	4,177
	Total Tyco Shareholders' Equity	4,181			11,053			11,053			15,598			(37,704		)	4,181
	Nonredeemable noncontrolling interest	—			—			—			49			—			49
	Total Equity	4,181			11,053			11,053			15,647			(37,704		)	4,230
	Total Liabilities, Redeemable Noncontrolling Interest and Equity	$	10,883		$	11,053		$	19,168		$	24,009		$	(53,418	)	$	11,695
	CONDENSED CONSOLIDATING BALANCE SHEET
	As of September 26, 2014
	($ in millions)
		Tyco			Tyco			Other			Consolidating			Total
		International			International			Subsidiaries			Adjustments
		Ltd.			Finance S.A.
	Assets
	Current Assets:
	Cash and cash equivalents	$	—		$	—		$	892		$	—		$	892
	Accounts receivable, net	—			—			1,734			—			1,734
	Inventories	—			—			625			—			625
	Intercompany receivables	18			245			8,102			(8,365		)	—
	Prepaid expenses and other current assets	7			62			982			—			1,051
	Deferred income taxes	—			—			304			—			304
	Assets held for sale	—			—			180			—			180
	Total current assets	25			307			12,819			(8,365		)	4,786
	Property, plant and equipment, net	—			—			1,262			—			1,262
	Goodwill	—			—			4,122			—			4,122
	Intangible assets, net	—			—			712			—			712
Investment in subsidiaries	12,738			16,209			—			(28,947		)	—
Intercompany loans receivable	—			3,693			5,346			(9,039		)	—
Other assets	26			4			897			—			927
Total Assets	$	12,789		$	20,213		$	25,158		$	(46,351	)	$	11,809
Liabilities and Equity
Current Liabilities:
Loans payable and current maturities of long-term debt	$	—		$	—		$	20		$	—		$	20
Accounts payable	1			—			824			—			825
Accrued and other current liabilities	191			23			1,900			—			2,114
Deferred revenue	—			—			400			—			400
Intercompany payables	3,517			4,593			255			(8,365		)	—
Liabilities held for sale	—			—			118			—			118
Total current liabilities	3,709			4,616			3,517			(8,365		)	3,477
Long-term debt	—			1,441			2			—			1,443
Intercompany loans payable	4,180			1,888			2,971			(9,039		)	—
Deferred revenue	—			—			335			—			335
Other liabilities	253			—			1,618			—			1,871
Total Liabilities	8,142			7,945			8,443			(17,404		)	7,126
Redeemable noncontrolling interest	—			—			13			—			13
Tyco Shareholders' Equity:
Ordinary shares	208			—			—			—			208
Ordinary shares held in treasury	—			—			(2,515		)	—			(2,515		)
Other shareholders' equity	4,439			12,268			19,194			(28,947		)	6,954
Total Tyco Shareholders' Equity	4,647			12,268			16,679			(28,947		)	4,647
Nonredeemable noncontrolling interest	—			—			23			—			23
Total Equity	4,647			12,268			16,702			(28,947		)	4,670
Total Liabilities, Redeemable Noncontrolling Interest and Equity	$	12,789		$	20,213		$	25,158		$	(46,351	)	$	11,809
Condensed Consolidating Statement of Cash Flows	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	For the Six Months Ended March 27, 2015
	($ in millions)
		Tyco			Tyco			Tyco			Other			Consolidating			Total
		International plc			Fire & Security			International			Subsidiaries			Adjustments
					Finance SCA			Finance S.A.
	Cash Flows From Operating Activities:
	Net cash provided by (used in) operating activities	$	20		$	—		$	(504	)	$	746		$	—		$	262
	Net cash provided by discontinued operating activities	—			—			—			3			—			3
	Cash Flows From Investing Activities:
	Capital expenditures	—			—			—			(123		)	—			(123		)
	Proceeds from disposal of assets	—			—			—			3			—			3
	Acquisition of businesses, net of cash acquired	—			—			—			(525		)	—			(525		)
	Acquisition of dealer generated customer accounts and bulk account purchases	—			—			—			(8		)	—			(8		)
	Divestiture of businesses, net of cash divested	—			—			—			(1		)	—			(1		)
	Net increase in intercompany loans	—			—			(59		)	—			59			—
	Sales and maturities of investments	—			—			—			279			—			279
	Purchases of investments	—			—			—			(288		)	—			(288		)
	Increase in restricted cash	—			—			—			(39		)	—			(39		)
	Other	—			—			—			(1		)	—			(1		)
	Net cash used in investing activities	—			—			(59		)	(703		)	59			(703		)
	Net cash used in discontinued investing activities	—			—			—			(15		)	—			(15		)
	Cash Flows From Financing Activities:
	Repayment of short-term debt	—			—			—			(1		)	—			(1		)
	Proceeds from issuance of long-term debt	—			—			567			—			—			567
	Proceeds from exercise of share options	50			—			—			7			—			57
	Dividends paid	(151		)	—			—			—			—			(151		)
	Repurchase of ordinary shares by treasury	—			—			—			(417		)	—			(417		)
	Net intercompany loan borrowings	83			—			—			(24		)	(59		)	—
	Transfer to discontinued operations	—			—			—			(12		)	—			(12		)
	Payment of contingent consideration	—			—			—			(23		)	—			(23		)
	Other	(2		)	—			(4		)	(17		)	—			(23		)
	Net cash (used in) provided by financing activities	(20		)	—			563			(487		)	(59		)	(3		)
	Net cash provided by discontinued financing activities	—			—			—			12			—			12
	Effect of currency translation on cash	—			—			—			(16		)	—			(16		)
	Net decrease in cash and cash equivalents	—			—			—			(460		)	—			(460		)
	Cash and cash equivalents at beginning of period	—			—			—			892			—			892
	Cash and cash equivalents at end of period	$	—		$	—		$	—		$	432		$	—		$	432
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	For the Six Months Ended March 28, 2014
	($ in millions)
		Tyco			Tyco			Other			Consolidating			Total
		International			International			Subsidiaries			Adjustments
		Ltd.			Finance S.A.
	Cash Flows From Operating Activities:
	Net cash (used in) provided by operating activities	$	(20	)	$	215		$	171		$	—		$	366
	Net cash provided by discontinued operating activities	—			—			77			—			77
	Cash Flows From Investing Activities:
	Capital expenditures	—			—			(135		)	—			(135		)
	Proceeds from disposal of assets	—			—			6			—			6
	Acquisition of businesses, net of cash acquired	—			—			(54		)	—			(54		)
	Acquisition of dealer generated customer accounts and bulk account purchases	—			—			(16		)	—			(16		)
	Net increase in intercompany loans	—			(206		)	—			206			—
	Increase in investment in subsidiaries	—			(9		)	—			9			—
	Sales and maturities of investments	—			—			141			—			141
	Purchases of investments	—			—			(40		)	—			(40		)
	Decrease in restricted cash	—			—			6			—			6
	Other	—			—			—			—			—
	Net cash used in investing activities	—			(215		)	(92		)	215			(92		)
	Net cash used in discontinued investing activities	—			—			(57		)	—			(57		)
	Cash Flows From Financing Activities:
	Proceeds from issuance of short-term debt	—			715			—			—			715
	Repayment of short-term debt	—			(715		)	—			—			(715		)
	Proceeds from exercise of share options	—			—			62			—			62
Dividends paid	(148		)	—			—			—			(148		)
Repurchase of ordinary shares by treasury	—			—			(250		)	—			(250		)
Net intercompany loan borrowings	168			—			38			(206		)	—
Increase in equity from parent	—			—			9			(9		)	—
Transfer from discontinued operations	—			—			20			—			20
Other	—			—			(10		)	—			(10		)
Net cash provided by (used in) financing activities	20			—			(131		)	(215		)	(326		)
Net cash used in discontinued financing activities	—			—			(20		)	—			(20		)
Effect of currency translation on cash	—			—			(16		)	—			(16		)
Net decrease in cash and cash equivalents	—			—			(68		)	—			(68		)
Cash and cash equivalents at beginning of period	—			—			563			—			563
Cash and cash equivalents at end of period	$	—		$	—		$	495		$	—		$	495

Basis_of_Presentation_and_Summ2

Basis of Presentation and Summary of Significant Accounting Policies (Details)	6 Months Ended
	Mar. 27, 2015	Mar. 28, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of days in fiscal year	364 days	364 days

2012_Separation_Transaction_De

2012 Separation Transaction (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015	Mar. 28, 2014	Mar. 27, 2015	Mar. 28, 2014
Extraordinary and Unusual Items [Abstract]
Separation transaction and merger costs	$0	$16	$2	$31
Pre-tax separation loss included within discontinued operations (See Note 2)	0	1	0	1
Separation Charges Tax Benefit	$0	$5	$1	$11

Divestitures_Details_2

Divestitures (Details 2) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015	Mar. 28, 2014	Mar. 27, 2015	Mar. 28, 2014
Discontinued Operations and Disposal Groups [Abstract]
Net revenue	$5	$152	$10	$310
Pre-tax (loss) income from discontinued operations	-6	20	-9	52
Pre-tax separation loss included within discontinued operations (See Note 2)	0	1	0	1
Pre-tax (loss) gain on sale of discontinued operations	0	-4	1	-4
Income tax expense	-10	0	-10	-7
(Loss) income from discontinued operations, net of income taxes	($16)	$15	($18)	$40

Divestitures_Details_3

Divestitures (Details 3) (USD $)	Mar. 27, 2015	Sep. 26, 2014
In Millions, unless otherwise specified
Discontinued Operations and Disposal Groups [Abstract]
Accounts receivable, net	$20	$26
Inventories	6	7
Prepaid expenses and other current assets	95	107
Deferred Tax Assets	3	3
Property, Plant and Equipment	6	6
Goodwill	3	3
Intangible Assets	21	25
Other assets	1	3
Total assets	155	180
Accounts payable	38	48
Accrued and other current liabilities	55	62
Deferred Revenue	2	2
Other liabilities	7	6
Total liabilities	$102	$118

Restructuring_and_Asset_Impair2

Restructuring and Asset Impairment Charges, Net (Details) (USD $)	Mar. 27, 2015
In Millions, unless otherwise specified
Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges, expected in fiscal 2014	$75
Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges, expected in fiscal 2014	$100

Restructuring_and_Asset_Impair3

Restructuring and Asset Impairment Charges, Net (Details 2) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015	Mar. 28, 2014	Mar. 27, 2015	Mar. 28, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	$12	$7	$70	$10
2015 Actions
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	9	0	58	0
2015 Actions | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	9		53
2015 Actions | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	0		5
2015 Actions | NA Installation & Services
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	4		26
2015 Actions | NA Installation & Services | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	4		26
2015 Actions | NA Installation & Services | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	0		0
2015 Actions | ROW Installation & Services
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	4		19
2015 Actions | ROW Installation & Services | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	4		14
2015 Actions | ROW Installation & Services | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	0		5
2015 Actions | Global Products
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	1		3
2015 Actions | Global Products | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	1		3
2015 Actions | Global Products | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	0		0
2015 Actions | Corporate Segment
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net			10
2015 Actions | Corporate Segment | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net			10
2015 Actions | Corporate Segment | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net			0
Program 2014
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	4	8	10	9
Restructuring and asset impairment charges, total	54		54
Program 2014 | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	4	8	10	9
Restructuring and asset impairment charges, total	47		47
Program 2014 | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	5		5
Program 2014 | Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	2		2
Program 2014 | NA Installation & Services
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	17		17
Program 2014 | NA Installation & Services | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	0	3	1	3
Restructuring and asset impairment charges, total	17		17
Program 2014 | NA Installation & Services | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	0		0
Program 2014 | NA Installation & Services | Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	0		0
Program 2014 | ROW Installation & Services
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	23		23
Program 2014 | ROW Installation & Services | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	0	4	0	5
Restructuring and asset impairment charges, total	18		18
Program 2014 | ROW Installation & Services | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	5		5
Program 2014 | ROW Installation & Services | Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	0		0
Program 2014 | Global Products
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	14		14
Program 2014 | Global Products | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	4	1	9	1
Restructuring and asset impairment charges, total	12		12
Program 2014 | Global Products | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	0		0
Program 2014 | Global Products | Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	2		2
Program 2014 | Corporate Segment | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	0	0	0	0
2013 and prior actions
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, net	($1)	($1)	$2	$1

Restructuring_and_Asset_Impair4

Restructuring and Asset Impairment Charges, Net (Details 3) (USD $)	6 Months Ended	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015	Mar. 27, 2015	Mar. 28, 2014	Mar. 28, 2014	Sep. 26, 2014
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period					$99
Balance at the end of the period	105	105			99
2015 Actions
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	0
Charges	60
Reversals	-2
Utilization	-25
Translation Adjustment	-1
Balance at the end of the period	32	32
Program 2014
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	29
Charges	10
Utilization	-14
Translation Adjustment	-2
Balance at the end of the period	23	23
2013 and prior actions
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	70
Charges	5	2	4	14
Reversals	3	3	5	13
Utilization	-15	-6	-17	-41
Balance at the end of the period	$50	$50

Restructuring_and_Asset_Impair5

Restructuring and Asset Impairment Charges, Net (Details 4) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015	Mar. 28, 2014	Mar. 27, 2015	Mar. 28, 2014	Sep. 26, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$105		$105		$99
Accrued and Other Current Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	90		90		83
Other Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	15		15		16
2013 and prior actions
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	50		50		70
Charges	2	4	5	14
Reversals	3	5	3	13
Utilization	6	17	15	41
Selling, General and Administrative [Member] | Repositioning actions
Restructuring Cost and Reserve [Line Items]
Repositioning charges related to professional fees	$17	$9	$34	$15

Acquisitions_Details

Acquisitions (Details) (USD $)	3 Months Ended	6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015	Mar. 27, 2015	Mar. 28, 2014
	acquisition	acquisition
Business Acquisition [Line Items]
Consideration transferred			$54
Acquisition of businesses, net of cash acquired	373	525	54
Cash balance acquired in the acquisition of a business	6	26
Cash Held in Escrow from Acquisition	5	8
Number of Businesses Acquired	6	11
Noncontrolling interest related to acquisitions		29
ROW Installation and Services and Global Products
Business Acquisition [Line Items]
Number of Businesses Acquired	5
Global Products
Business Acquisition [Line Items]
Number of Businesses Acquired		10
Westfire, Inc. | NA Installation & Services and ROW Installation & Services segments
Business Acquisition [Line Items]
Cash balance acquired in the acquisition of a business			1
Liabilities Incurred			1
Industrial Safety Technologies LLC.
Business Acquisition [Line Items]
Acquisition of businesses, net of cash acquired	327
Cash balance acquired in the acquisition of a business	5
Goodwill, Acquired During Period	134
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	70	70
Finite-lived Intangible Assets Acquired	143
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	15	15
Businesses other than IST
Business Acquisition [Line Items]
Consideration transferred	$46

Income_Taxes_Details

Income Taxes (Details) (USD $)	Mar. 27, 2015	Sep. 26, 2014
In Millions, unless otherwise specified
2012 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Prepaid expenses and other current assets	$0	$0
Other assets	0	0
Net receivable	0	0
Accrued and other current liabilities	0	0
Other liabilities	-46	-46
Tax sharing agreement related liabilities	-46	-46
Net liability	-46	-46
2007 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Prepaid expenses and other current assets	3	3
Other assets	24	23
Net receivable	27	26
Accrued and other current liabilities	-21	-21
Other liabilities	-194	-194
Tax sharing agreement related liabilities	-215	-215
Net liability	($188)	($189)

Income_Taxes_Details_2

Income Taxes (Details 2) (USD $)	0 Months Ended	6 Months Ended	3 Months Ended
	Jun. 20, 2013	Mar. 27, 2015	Mar. 27, 2015
Tax Sharing Agreement [Line Items]
Unrecognized tax benefits that may be resolved in the next twelve months, low end of range		0	$0
Unrecognized tax benefits that may be resolved in the next twelve months, high end of range		20,000,000	20,000,000
Deferred tax assets, net of valuation allowance		349,000,000	349,000,000
Gross deferred tax assets		2,400,000,000	2,400,000,000
Valuation allowances		2,000,000,000	2,000,000,000
Undistributed earnings of subsidiaries		0	0
Additional tax liability		0	0
2007 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Pre - 2012 separation related tax liabilities		175,000,000	175,000,000
Income tax examination, additional taxes owed	883,300,000
Income tax examination, proposed tax penalties	154,000,000
Income tax examination, amount of additional tax deficiency	30,000,000
Income tax examination, amount of disallowed interest and related deductions	2,900,000,000	2,900,000,000	2,900,000,000
Income tax examination, amount of estimated adverse impact on financial results	6,600,000,000	6,600,000,000	6,600,000,000
2012 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Total liability threshold under Tax Sharing Agreement		725,000,000	725,000,000
Tyco International | 2007 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Tax liability share percentage		27.00%
Tyco International | 2012 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Total liability threshold under Tax Sharing Agreement		500,000,000	500,000,000
Tax liability share percentage		52.50%	52.50%
Pentair
Tax Sharing Agreement [Line Items]
Tax liability share percentage		42.00%
Pentair | 2012 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Tax liability share percentage		20.00%	20.00%
ADT
Tax Sharing Agreement [Line Items]
Tax liability share percentage		58.00%
ADT | 2012 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Tax liability share percentage		27.50%	27.50%
Pentair and ADT | 2012 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Total liability threshold under Tax Sharing Agreement		225,000,000	$225,000,000
Medtronic | 2007 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Tax liability share percentage		42.00%
TE Connectivity | 2007 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Tax liability share percentage		31.00%

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 27, 2015	Mar. 28, 2014	Mar. 27, 2015	Mar. 28, 2014
Income
Income from continuing operations	$183	$192	$347	$437
Income from continuing operations attributable to Tyco common shareholders, giving effect to dilutive adjustments	$183	$192	$347	$437
Shares
Income from continuing operations (in shares)	420	461	420	462
Share options and restricted share awards	7	8	7	8
Income from continuing operations attributable to Tyco common shareholders, giving effect to dilutive adjustments (in shares)	427	469	427	470
Per Share Amount
Income from continuing operations (in dollars per share)	$0.44	$0.41	$0.83	$0.94
Income from continuing operations attributable to Tyco common shareholders, giving effect to dilutive adjustments (in dollars per share)	$0.43	$0.41	$0.81	$0.93
Restricted stock units
Earnings Per Share
Stock options and restricted stock excluded from the computation of earnings per share	1	2	1
Employee stock option
Earnings Per Share
Stock options and restricted stock excluded from the computation of earnings per share	3	2	3	5

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets (Details) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015	Mar. 28, 2014	Sep. 26, 2014	Sep. 27, 2013
Changes in the carrying amount of goodwill, by segment ($ in millions):
Goodwill balance at beginning of period	$4,122	$4,158
Accumulated impairment	-1,761		-1,761	-1,761
Acquisitions/ purchase accounting adjustments	324	21
Divestitures	0
Currency translation	-181	-57
Goodwill balance at end of period	4,265
Gross Goodwill
Changes in the carrying amount of goodwill, by segment ($ in millions):
Goodwill balance at beginning of period			5,883	5,919
Goodwill balance at end of period	6,026		5,883	5,919
NA Installation & Services
Changes in the carrying amount of goodwill, by segment ($ in millions):
Goodwill balance at beginning of period	1,976	1,978
Accumulated impairment	-126		-126	-126
Acquisitions/ purchase accounting adjustments	15	10
Divestitures	0
Currency translation	-20	-12
Goodwill balance at end of period	1,971
NA Installation & Services | Gross Goodwill
Changes in the carrying amount of goodwill, by segment ($ in millions):
Goodwill balance at beginning of period			2,102	2,104
Goodwill balance at end of period	2,097		2,102	2,104
ROW Installation & Services
Changes in the carrying amount of goodwill, by segment ($ in millions):
Goodwill balance at beginning of period	904	923
Accumulated impairment	-1,068		-1,068	-1,068
Acquisitions/ purchase accounting adjustments	34	15
Divestitures	0
Currency translation	-128	-34
Goodwill balance at end of period	810
ROW Installation & Services | Gross Goodwill
Changes in the carrying amount of goodwill, by segment ($ in millions):
Goodwill balance at beginning of period			1,972	1,991
Goodwill balance at end of period	1,878		1,972	1,991
Global Products
Changes in the carrying amount of goodwill, by segment ($ in millions):
Goodwill balance at beginning of period	1,242	1,257
Accumulated impairment	-567		-567	-567
Acquisitions/ purchase accounting adjustments	275	-4
Divestitures	0
Currency translation	-33	-11
Goodwill balance at end of period	1,484
Global Products | Gross Goodwill
Changes in the carrying amount of goodwill, by segment ($ in millions):
Goodwill balance at beginning of period			1,809	1,824
Goodwill balance at end of period	$2,051		$1,809	$1,824

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets (Details 2) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015	Mar. 28, 2014	Mar. 27, 2015	Mar. 28, 2014	Sep. 26, 2014
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Amortizable	$2,155		$2,155		$2,037
Accumulated Amortization	1,544		1,544		1,615
Gross Carrying Amount, Non-Amortizable	297		297		290
Intangible asset amortization expense and estimated aggregate amortization expense ($ in millions):
Intangible asset amortization expense	21	23	41	46
Estimated aggregate amortization expense, remainder of 2014	40		40
Estimated aggregate amortization expense, 2015	88		88
Estimated aggregate amortization expense, 2016	79		79
Estimated aggregate amortization expense, 2017	74		74
Estimated aggregate amortization expense, 2018 and thereafter	330		330
Contracts and related customer relationships
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Amortizable	1,377		1,377		1,400
Accumulated Amortization	1,040		1,040		1,113
Intellectual property
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Amortizable	768		768		608
Accumulated Amortization	497		497		487
Gross Carrying Amount, Non-Amortizable	212		212		214
Franchise rights
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Non-Amortizable	76		76		76
Other
Gross carrying amount and accumulated amortization of intangible assets:
Gross Carrying Amount, Amortizable	10		10		29
Accumulated Amortization	7		7		15
Gross Carrying Amount, Non-Amortizable	$9		$9		$0

Debt_Details

Debt (Details)

6 Months Ended

6 Months Ended

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

USD ($)

USD ($)

Carrying amount

Carrying amount

Total

Total

3.375% public notes due 2015

3.375% public notes due 2015

3.75% public notes due 2018

3.75% public notes due 2018

8.5% public notes due 2019

8.5% public notes due 2019

7.0% public notes due 2019

7.0% public notes due 2019

6.875% public notes due 2021

6.875% public notes due 2021

4.625% public notes due 2023

4.625% public notes due 2023

1.375% public notes due 2025

1.375% public notes due 2025

1.375% public notes due 2025

Other

Other

Commercial paper

Commercial paper

Level 1

Level 1

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

EUR (€)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Debt:

Document Period End Date

27-Mar-15

Debt

$2,010,000,000

$1,463,000,000

$258,000,000

$67,000,000

$67,000,000

$364,000,000

$364,000,000

$245,000,000

$245,000,000

$465,000,000

$465,000,000

$42,000,000

$42,000,000

$548,000,000

€ 500,000,000

$0

$21,000,000

[1]

$22,000,000

[1]

Less current portion

278,000,000

20,000,000

258,000,000

[2]

20,000,000

0

0

Long-term debt

1,732,000,000

1,443,000,000

Debt instrument, fair value

1,989,000,000

1,441,000,000

2,198,000,000

1,670,000,000

1,989,000,000

1,441,000,000

Debt Instrument, Interest Rate, Stated Percentage

3.38%

3.38%

3.75%

3.75%

8.50%

8.50%

7.00%

7.00%

6.88%

6.88%

4.63%

4.63%

1.38%

1.38%

Available line of credit under revolving credit agreement

1,000,000,000

1,000,000,000

Amounts drawn under revolving credit facilities

0

0

Description of variable interest rate basis

LIBOR

Proceeds from Issuance of Debt

567,000,000

563,000,000

Debt Issuance Cost

5,000,000

Debt Instrument, Unamortized Discount (Premium), Net

$1,000,000

[1]

(2) $20 million of the amount shown as other is included in the current portion of the Company's total debt as of both MarchB 27, 2015 and SeptemberB 26, 2014.

[2]

(1) $258 million of 3.375% public notes due October 2015 is included in the current portion of debt as of MarchB 27, 2015.

Financial_Instruments_Details

Financial Instruments (Details)

3 Months Ended

6 Months Ended

3 Months Ended

3 Months Ended

Mar. 27, 2015

Mar. 28, 2014

Mar. 27, 2015

Mar. 28, 2014

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Mar. 27, 2015

Mar. 27, 2015

Mar. 27, 2015

Mar. 27, 2015

Mar. 27, 2015

Mar. 27, 2015

Mar. 27, 2015

Mar. 27, 2015

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Sep. 26, 2014

Sep. 26, 2014

Mar. 27, 2015

Mar. 27, 2015

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Mar. 27, 2015

Mar. 27, 2015

Mar. 27, 2015

Mar. 27, 2015

Sep. 26, 2014

Mar. 27, 2015

Mar. 27, 2015

Sep. 26, 2014

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Recurring

Recurring

Level 1

Level 1

Level 2

Level 2

Bank Time Deposits

Bank Time Deposits

Bank Time Deposits

Debt Securities

Debt Securities

Debt Securities

Debt Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Equity Securities

Foreign Exchange Contract

Foreign Exchange Contract

Prepaid Expenses and Other Current Assets

Prepaid Expenses and Other Current Assets

Prepaid Expenses and Other Current Assets

Prepaid Expenses and Other Current Assets

Prepaid Expenses and Other Current Assets

Prepaid Expenses and Other Current Assets

Prepaid Expenses and Other Current Assets

Other Assets

Other Assets

Other Assets

Other Assets

Affiliated Entity

Affiliated Entity

1.375% public notes due 2025

1.375% public notes due 2025

1.375% public notes due 2025

USD ($)

USD ($)

Recurring

Recurring

Recurring

Recurring

Recurring

Level 1

Level 2

USD ($)

Available-for-sale Securities

Available-for-sale Securities

Available-for-sale Securities

Level 2

Available-for-sale Securities

Available-for-sale Securities

Available-for-sale Securities

Trading Securities

Trading Securities

Trading Securities

Trading Securities

Trading Securities

USD ($)

USD ($)

USD ($)

USD ($)

Bank Time Deposits

Debt Securities

Equity Securities

Equity Securities

Equity Securities

USD ($)

Debt Securities

Equity Securities

Equity Securities

USD ($)

USD ($)

USD ($)

EUR (€)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Recurring

Recurring

Recurring

Level 1

Level 2

Recurring

Recurring

Level 1

Level 2

Recurring

Recurring

Level 1

Level 1

Level 2

USD ($)

Available-for-sale Securities

Available-for-sale Securities

Trading Securities

Trading Securities

Available-for-sale Securities

Available-for-sale Securities

Trading Securities

USD ($)

USD ($)

USD ($)

Recurring

Recurring

USD ($)

USD ($)

Recurring

Recurring

USD ($)

USD ($)

Recurring

Recurring

Recurring

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Available-for-sale investments

Long-term Debt

$2,010,000,000

$2,010,000,000

$1,463,000,000

$548,000,000

€ 500,000,000

$0

Debt Instrument, Interest Rate, Stated Percentage

1.38%

1.38%

Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax

176,000,000

15,000,000

-374,000,000

-52,000,000

20,000,000

Derivative, notional amount

298,000,000

258,000,000

Investments, Fair Value Disclosure

345,000,000

337,000,000

345,000,000

337,000,000

0

0

275,000,000

275,000,000

0

198,000,000

198,000,000

0

0

84,000,000

84,000,000

0

63,000,000

62,000,000

63,000,000

62,000,000

0

63,000,000

337,000,000

275,000,000

0

0

63,000,000

62,000,000

282,000,000

198,000,000

84,000,000

0

Gain (Loss) on Investments

1,000,000

Intercompany Loans Designated as Permanent

$1,400,000,000

$1,400,000,000

$1,500,000,000

$1,500,000,000

Financial_Instruments_Details_

Financial Instruments (Details 2) (USD $)	3 Months Ended		6 Months Ended
	Mar. 27, 2015	Mar. 28, 2014	Mar. 27, 2015	Mar. 28, 2014	Sep. 26, 2014
Cost-method Investments, Realized Gain (Loss)
Intercompany Loans Designated as Permanent	$1,400,000,000		$1,400,000,000
Affiliated Entity
Cost-method Investments, Realized Gain (Loss)
Intercompany Loans Designated as Permanent	1,500,000,000		1,500,000,000		1,500,000,000
Cumulative gain/(loss) on intercompany loans designated as permanent	-75,000,000	-7,000,000	145,000,000	4,000,000
Debt Securities
Related Party Transaction [Line Items]
Gain (Loss) on Investments	($1,000,000)

Commitments_and_Contingencies_

Commitments and Contingencies Commitments and Contingencies (Details) (USD $)	6 Months Ended	0 Months Ended	3 Months Ended	6 Months Ended	1 Months Ended	3 Months Ended
	Mar. 27, 2015	Jun. 20, 2013	Mar. 27, 2015	Mar. 28, 2014	Nov. 30, 2014	Sep. 26, 2014	Dec. 26, 2014	Dec. 27, 2013	Sep. 27, 2013
			claim
Legacy Matters Related to Former Management
Document Period End Date	27-Mar-15
Remedial costs
Environmental Matters [Abstract]
Loss contingency costs, minimum	29,000,000		$29,000,000
Loss contingency costs, maximum	72,000,000		72,000,000
Probable contingency loss	33,000,000		33,000,000
Loss contingency accrual, accrued and other current liabilities	15,000,000		15,000,000
Loss contingency accrual, other liabilities	18,000,000		18,000,000
Remediation and monitoring costs
Environmental Matters [Abstract]
Loss contingency costs, minimum	19,000,000		19,000,000
Loss contingency costs, maximum	46,000,000		46,000,000
Probable contingency loss	22,000,000		22,000,000
Loss contingency accrual, accrued and other current liabilities	10,000,000		10,000,000
Loss contingency accrual, other liabilities	12,000,000		12,000,000
2007 Tax Sharing Agreement
Compliance Matters
Income tax examination, additional taxes owed		883,300,000
Income tax examination, proposed tax penalties		154,000,000
Income tax examination, amount of additional tax deficiency		30,000,000
Income tax examination, amount of disallowed interest and related deductions	2,900,000,000	2,900,000,000	2,900,000,000
Income tax examination, amount of estimated adverse impact on financial results	6,600,000,000	6,600,000,000	6,600,000,000
Accrued and other current liabilities	21,000,000		21,000,000			21,000,000
Legacy Matters
Legacy Matters Related to Former Management
Legacy matter liabilities								92,000,000
Asbestos Matters
Asbestos Matters
Percentage of claims which are filed against either yarway or Grinnell	90.00%		90.00%
Pending claims, number	5,900		5,900
asbestos liability reserve, net	319,000,000		319,000,000			608,000,000
asbestos liability reserve, gross	846,000,000		846,000,000			853,000,000
asbestos related insurance recovery assets	527,000,000		527,000,000			245,000,000
Cash to be contributed to Yarway Trust by the Company and Yarway	325,000,000		325,000,000
Estimated future settlement of intercompany amounts allegedly due to Yarway	100,000,000		100,000,000
Cash and other assets transferred to QSF			278,000,000
Settlements received by QSF from insurers			22,000,000
TE Connectivity | 2007 Tax Sharing Agreement
Compliance Matters
Tax liability share percentage	31.00%
Medtronic | 2007 Tax Sharing Agreement
Compliance Matters
Tax liability share percentage	42.00%
Tyco International | 2007 Tax Sharing Agreement
Compliance Matters
Tax liability share percentage	27.00%
CIT tax settlement				16,000,000
Accrued and Other Current Liabilities | Asbestos Matters
Asbestos Matters
asbestos liability reserve, gross	349,000,000		349,000,000
Other Liabilities | Asbestos Matters
Asbestos Matters
asbestos liability reserve, gross	497,000,000		497,000,000
Prepaid Expenses and Other Current Assets | Asbestos Matters
Asbestos Matters
asbestos related insurance recovery assets	43,000,000		43,000,000
Restricted Cash and Cash Equivalents	22,000,000		22,000,000
Restricted Investments	282,000,000		282,000,000
Other Assets | Asbestos Matters
Asbestos Matters
asbestos related insurance recovery assets	484,000,000		484,000,000
Former CFO
Legacy Matters Related to Former Management
Payments received from former management					12,000,000
Portion of settlement paid to class action members							5,000,000
payments received from former management, net of portions paid to class action members					7,000,000
Yarway Corporation [Member] | Asbestos Matters
Asbestos Matters
Pending claims, number	3,200		3,200
Loss contingency accrual									10,000,000
Yarway Corporation [Member] | Selling, General and Administrative Expenses | Asbestos Matters
Asbestos Matters
asbestos related charge						225,000,000
California Wage Litigation Against Grinnell
Compliance Matters
Charge relating to Simplex Grinnell wage claim settlements and rulings							17,000,000
Simplex Grinnel Wage Claim Settlement			$14,000,000

Retirement_Plans_Details

Retirement Plans (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015	Mar. 28, 2014	Mar. 27, 2015	Mar. 28, 2014
United States Pension Plan of US Entity, Defined Benefit
Defined benefit plan, net period benefit cost:
Service cost	$2	$2	$4	$4
Interest cost	9	9	18	18
Expected return on plan assets	-14	-12	-28	-24
Amortization of net actuarial loss	2	2	4	4
Net periodic benefit cost	-1	1	-2	2
Amortization of net actuarial loss expected over current fiscal year			9
Minimum required contributions to pension plans for fiscal year 2014	13
Employer contributions	3		4
Non United States Pension Plans of Foreign Entity Defined Benefit
Defined benefit plan, net period benefit cost:
Service cost	3	2	5	5
Interest cost	13	14	26	28
Expected return on plan assets	-19	-18	-39	-37
Amortization of net actuarial loss	3	3	7	6
Net periodic benefit cost	0	1	-1	2
Amortization of net actuarial loss expected over current fiscal year			14
Minimum required contributions to pension plans for fiscal year 2014	23
Employer contributions	$4		$9

Equity_and_Comprehensive_Incom2

Equity and Comprehensive Income (Details)	0 Months Ended		3 Months Ended
	Mar. 05, 2015	Mar. 05, 2014	Dec. 26, 2014	Apr. 17, 2015	Mar. 27, 2015	Mar. 27, 2015	Sep. 26, 2014	Sep. 11, 2014	Mar. 28, 2014	Mar. 03, 2014
	USD ($)	USD ($)	USD ($)		USD ($)	EUR (€)	USD ($)	USD ($)	USD ($)	USD ($)
		installment
Equity [Abstract]
authorized share capital in USD					$11,000,000
authorized share capital in GBP						40,000
Ordinary shares, shares authorized					1,000,000,000	1,000,000,000	825,222,070
Common Stock, Par or Stated Value Per Share (usd per share)					$0.01
Preferred Stock, Shares Authorized					100,000,000	100,000,000	0
Preferred Stock, Par or Stated Value Per Share (usd per share)					$0.01		$0
Ordinary A Par Value per Share (usd per share)						€ 1
Ordinary A Shares, shares authorized					40,000	40,000
Entity Common Stock, Shares Outstanding				421,032,334
Common sock, dividends, per share, approved subject to shareholder approval (usd per share)	$0.21	$0.72
Number of quarterly installments of dividend payable		4
Installment of dividend payable (in dollars per share)		$0.18
Accrued dividend									332,000,000
Share Repurchase Program
Amount approved under the share repurchase program								1,000,000,000		1,750,000,000
Number of shares repurchased			10,000,000
Value of shares repurchased			417,000,000
Remaining authorized repurchase amount					$1,000,000,000

Equity_and_Comprehensive_Incom3

Equity and Comprehensive Income (Details 2) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015	Mar. 28, 2014	Mar. 27, 2015	Mar. 28, 2014
Equity [Abstract]
Net income	$165	$207	$326	$479
Foreign currency translation	-176	-15	374	52
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	5	5	11	10
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	-1	-1	2	3
Defined benefit and post retirement plans	4	4	9	7
Total other comprehensive loss, net of tax	-172	-11	-365	-45
Comprehensive income (loss)	-7	196	-39	434
Less: comprehensive (loss) income attributable to noncontrolling interests	-2	0	-3	2
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	($5)	$196	($36)	$432

Equity_and_Comprehensive_Incom4

Equity and Comprehensive Income (Details 3) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015	Mar. 28, 2014	Sep. 26, 2014	Sep. 27, 2013
Components of Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive loss	($1,590)		($1,225)
Accumulated Translation Adjustment
Components of Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive loss	-1,067	-571	-693	-519
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	-374	-52
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	0
Retirement Plans
Components of Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive loss	-523	-461	-532	-468
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	9	7
Accumulated Other Comprehensive Loss
Components of Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive loss	-1,590	-1,032	-1,225	-987
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	-374	-52
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$9	$7

Share_Plans_Details

Share Plans (Details) (USD $)	3 Months Ended			6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 26, 2014	Mar. 27, 2015	Mar. 28, 2014	Mar. 27, 2015
Shared Based Compensation Arrangements:
Number of awards, issued (in shares)	2.4
Schedule of weighted average assumptions
Fair value assumption, expected stock price volatility (as a percent)	32.00%
Fair value assumption, risk-free interest rate (as a percent)	1.83%
Fair value assumption, expected annual dividend, per share (in dollars per share)	$0.72
Fair value assumption, expected option life	5 years 6 months 25 days
Performance Share Awards
Shared Based Compensation Arrangements:
Awards granted, other than options, number (in shares)	0.5
Award vesting period	3 years	3 years
Awards granted, other than options, weighted-average grant-date fair value (in dollars per share)	$42.95
Share Options
Shared Based Compensation Arrangements:
Awards granted, options, number (in shares)	1.5
Award vesting period	4 years
Awards granted, options, weighted-average grant-date fair value (in dollars per share)	$11.77
Restricted Stock Awards
Shared Based Compensation Arrangements:
Awards granted, other than options, number (in shares)	0.4
Award vesting period			4 years	4 years
Awards granted, other than options, weighted-average grant-date fair value (in dollars per share)	$43.38

Consolidated_Segment_Data_Deta

Consolidated Segment Data (Details) (USD $)	3 Months Ended				6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015		Mar. 28, 2014		Mar. 27, 2015		Mar. 28, 2014
Selected information by segment
Net revenue	$2,430	[1]	$2,480	[1]	$4,908	[1]	$4,969	[1]
Operating income (loss)	221		259		420		602
Legacy Matters Related to Former Management
Insurance Recoveries			21				21
Legacy legal matters reversal							92
NA Installation & Services
Selected information by segment
Net revenue	944	[1]	939	[1]	1,895	[1]	1,896	[1]
ROW Installation & Services
Selected information by segment
Net revenue	847	[1]	936	[1]	1,763	[1]	1,903	[1]
Global Products
Selected information by segment
Net revenue	639	[1]	605	[1]	1,250	[1]	1,170	[1]
Operating Segments | NA Installation & Services
Selected information by segment
Operating income (loss)	119		99		224		216
Operating Segments | ROW Installation & Services
Selected information by segment
Operating income (loss)	60		114		130		208
Operating Segments | Global Products
Selected information by segment
Operating income (loss)	110		107		208		193
Corporate and Other (2)
Selected information by segment
Operating income (loss)	-68		-61		-142		-15
Tyco International | 2007 Tax Sharing Agreement
Legacy Matters Related to Former Management
CIT tax settlement							$16
[1]	Net revenue by operating segment excludes intercompany transactions.

Inventory_Details

Inventory (Details) (USD $)	Mar. 27, 2015	Sep. 26, 2014
In Millions, unless otherwise specified
Inventory Disclosure [Abstract]
Purchased materials and manufactured parts	$181	$159
Work in process	91	85
Finished goods	405	381
Inventories	$677	$625

Property_Plant_and_Equipment_D

Property, Plant and Equipment (Details) (USD $)	Mar. 27, 2015	Sep. 26, 2014
In Millions, unless otherwise specified
Property, Plant and Equipment:
Accumulated depreciation	($2,615)	($2,750)
Property, plant and equipment, net	1,216	1,262
Land
Property, Plant and Equipment:
Property, plant and equipment	33	36
Buildings
Property, Plant and Equipment:
Property, plant and equipment	408	411
Subscriber systems
Property, Plant and Equipment:
Property, plant and equipment	2,044	2,210
Machinery and equipment
Property, Plant and Equipment:
Property, plant and equipment	1,253	1,265
Construction in progress
Property, Plant and Equipment:
Property, plant and equipment	$93	$90

Guarantees_Details

Guarantees (Details) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015	Sep. 26, 2014
Guarantees [Abstract]
Performance guarantee obligations for 2012 separation, fair value	$3	$3
Performance guarantee obligations for 2007 separation, fair value	3	3
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Warranty accrual, balance at the beginning of the period	28
Warranties issued	12
Changes in estimates	1
Settlements	-6
Product Warranty Accrual, Currency Translation, Increase (Decrease)	1
Warranty accrual, balance at the end of the period	$34

Guarantor_Financial_Statements2

Guarantor Financial Statements (Details) (USD $)	3 Months Ended				6 Months Ended
In Millions, unless otherwise specified	Mar. 27, 2015		Mar. 28, 2014		Mar. 27, 2015		Mar. 28, 2014
Statements of Operations
Net revenue	$2,430	[1]	$2,480	[1]	$4,908	[1]	$4,969	[1]
Cost of product sales	999		1,003		2,021		2,001
Cost of services	550		575		1,097		1,150
Selling, general and administrative expenses	648		635		1,300		1,205
Separation Transaction Costs	0		1		0		1
Restructuring and asset impairment charges, net	12		7		70		10
Operating income	221		259		420		602
Interest income	4		3		7		6
Interest expense	-25		-25		-49		-49
Other (expense) income, net	-1		-1		3		-2
Equity in net income of subsidiaries	0		0		0		0
Intercompany interest and fees	0		0		0		0
Income from continuing operations before income taxes	199		236		381		557
Income tax expense	-18		-39		-37		-109
Equity loss in earnings of unconsolidated subsidiaries	0		-5		0		-9
Income from continuing operations	181		192		344		439
(Loss) income from discontinued operations, net of income taxes	-16		15		-18		40
Net income	165		207		326		479
Less: noncontrolling interest in subsidiaries net (loss) income	-2		0		-3		2
Net income attributable to Tyco ordinary shareholders	167		207		329		477
Statement of Comprehensive Income
Net income	165		207		326		479
Other comprehensive (loss) income, net of tax
Foreign currency translation	-176		-15		-374		-52
Defined benefit and post retirement plans	4		4		9		7
Total other comprehensive loss, net of tax	-172		-11		-365		-45
Comprehensive income	-7		196		-39		434
Less: comprehensive (loss) income attributable to noncontrolling interests	-2		0		-3		2
Comprehensive income (loss) attributable to Tyco ordinary shareholders	-5		196		-36		432
Cash Flows From Operating Activities:
Net cash provided by (used in) operating activities					262		366
Net cash provided by discontinued operating activities					3		77
Cash Flows From Investing Activities:
Capital expenditures					-123		-135
Proceeds from disposal of assets					3		6
Acquisition of businesses, net of cash acquired	-373				-525		-54
Acquisition of dealer generated customer accounts and bulk account purchases					-8		-16
Proceeds from Divestiture of Businesses, Net of Cash Divested					-1		0
Net Increase in Intercompany Loans					0		0
Sales and maturities of investments					279		141
Payments to Acquire Investments					-288		-40
Increase (Decrease) in Restricted Cash					-39		6
Other					-1		0
Net cash used in investing activities					-703		-92
Net cash used in discontinued investing activities					-15		-57
Cash Flows From Financing Activities:
Proceeds from issuance of short-term debt							715
Repayments of Debt					-1		-715
Proceeds from Issuance of Debt					567
Proceeds from exercise of share options					57		62
Dividends paid					-151		-148
Repurchase of ordinary shares by treasury					-417		-250
Net intercompany loan borrowings					0		0
Transfer (to) from discontinued operations					-12		20
Payment of contingent consideration					-23		0
Other					-23		-10
Net cash used in financing activities					-3		-326
Net cash provided by (used in) discontinued financing activities					12		-20
Effect of currency translation on cash					-16		-16
Net decrease in cash and cash equivalents					-460		-68
Cash and cash equivalents at beginning of period					892		563
Cash and cash equivalents at end of period	432		495		432		495
Tyco International plc
Statements of Operations
Net revenue					0
Cost of product sales					0
Cost of services					0
Selling, general and administrative expenses	2		0		5		-13
Separation Transaction Costs							0
Restructuring and asset impairment charges, net					0
Operating income	-2		0		-5		13
Interest income	0		0		0		0
Interest expense	0		0		0		0
Other (expense) income, net	0		-2		0		-3
Equity in net income of subsidiaries	152		199		295		467
Intercompany interest and fees	17		12		39		2
Income from continuing operations before income taxes	167		209		329		479
Income tax expense	0		0		0		0
Income from continuing operations	167		209		329		479
(Loss) income from discontinued operations, net of income taxes	0		-2		0		-2
Net income	167		207		329		477
Less: noncontrolling interest in subsidiaries net (loss) income					0
Net income attributable to Tyco ordinary shareholders	167		207		329		477
Statement of Comprehensive Income
Net income	167		207		329		477
Other comprehensive (loss) income, net of tax
Foreign currency translation	-176		-15		-374		-52
Defined benefit and post retirement plans	4		4		9		7
Total other comprehensive loss, net of tax	-172		-11		-365		-45
Comprehensive income	-5		196		-36		432
Less: comprehensive (loss) income attributable to noncontrolling interests			0				0
Comprehensive income (loss) attributable to Tyco ordinary shareholders	-5		196		-36		432
Cash Flows From Operating Activities:
Net cash provided by (used in) operating activities					20		-20
Cash Flows From Investing Activities:
Net cash used in investing activities					0		0
Cash Flows From Financing Activities:
Proceeds from exercise of share options					50
Dividends paid					-151		-148
Net intercompany loan borrowings					83		168
Transfer (to) from discontinued operations							0
Other					-2
Net cash used in financing activities					-20		20
Net cash provided by (used in) discontinued financing activities							0
Tyco International Finance S.A.
Condensed Financial Statements, Captions
Ownership Percentage of Subsidiary by Parent	100.00%				100.00%
Statements of Operations
Net revenue					0
Cost of product sales					0
Cost of services					0
Selling, general and administrative expenses	0		1		1		2
Separation Transaction Costs							0
Restructuring and asset impairment charges, net					0
Operating income	0		-1		-1		-2
Interest income					0
Interest expense	-24		-24		-48		-48
Other (expense) income, net	-2				2
Equity in net income of subsidiaries	160		227		287		511
Intercompany interest and fees	24		8		51		17
Income from continuing operations before income taxes	158		210		291		478
Income tax expense	0		0		0		0
Income from continuing operations	158		210		291		478
(Loss) income from discontinued operations, net of income taxes					0
Net income	158		210		291		478
Less: noncontrolling interest in subsidiaries net (loss) income					0
Net income attributable to Tyco ordinary shareholders	158		210		291		478
Statement of Comprehensive Income
Net income	158		210		291		478
Other comprehensive (loss) income, net of tax
Foreign currency translation	16		0		15		0
Defined benefit and post retirement plans			0		0		0
Total other comprehensive loss, net of tax	16		0		15		0
Comprehensive income	174		210		306		478
Less: comprehensive (loss) income attributable to noncontrolling interests			0				0
Comprehensive income (loss) attributable to Tyco ordinary shareholders	174		210		306		478
Cash Flows From Operating Activities:
Net cash provided by (used in) operating activities					-504		215
Cash Flows From Investing Activities:
Net Increase in Intercompany Loans					-59		-206
Increase in investment in subsidiaries							-9
Net cash used in investing activities					-59		-215
Cash Flows From Financing Activities:
Proceeds from issuance of short-term debt							715
Repayments of Debt					0		-715
Proceeds from Issuance of Debt					567
Transfer (to) from discontinued operations							0
Other					-4
Net cash used in financing activities					563		0
Other Subsidiaries
Statements of Operations
Net revenue	2,430		2,480		4,908		4,969
Cost of product sales	999		1,003		2,021		2,001
Cost of services	550		575		1,097		1,150
Selling, general and administrative expenses	646		634		1,294		1,216
Separation Transaction Costs			1				1
Restructuring and asset impairment charges, net	12		7		70		10
Operating income	223		260		426		591
Interest income	4		3		7		6
Interest expense	-1		-1		-1		-1
Other (expense) income, net	1		1		1		1
Equity in net income of subsidiaries					0
Intercompany interest and fees	-41		-20		-90		-19
Income from continuing operations before income taxes	186		243		343		578
Income tax expense	-18		-39		-37		-109
Equity loss in earnings of unconsolidated subsidiaries			-5				-9
Income from continuing operations	168		199		306		460
(Loss) income from discontinued operations, net of income taxes	-16		17		-18		42
Net income	152		216		288		502
Less: noncontrolling interest in subsidiaries net (loss) income	-2				-3		2
Net income attributable to Tyco ordinary shareholders	154		216		291		500
Statement of Comprehensive Income
Net income	152		216		288		502
Other comprehensive (loss) income, net of tax
Foreign currency translation	-192		-15		-389		-52
Defined benefit and post retirement plans	4		4		9		7
Total other comprehensive loss, net of tax	-188		-11		-380		-45
Comprehensive income	-36		205		-92		457
Less: comprehensive (loss) income attributable to noncontrolling interests	-2		0		-3		2
Comprehensive income (loss) attributable to Tyco ordinary shareholders	-34		205		-89		455
Cash Flows From Operating Activities:
Net cash provided by (used in) operating activities					746		171
Net cash provided by discontinued operating activities					3		77
Cash Flows From Investing Activities:
Capital expenditures					-123		-135
Proceeds from disposal of assets					3		6
Acquisition of businesses, net of cash acquired					-525		-54
Acquisition of dealer generated customer accounts and bulk account purchases					-8		-16
Proceeds from Divestiture of Businesses, Net of Cash Divested					-1
Net Increase in Intercompany Loans					0		0
Sales and maturities of investments					279		141
Payments to Acquire Investments					-288		-40
Increase (Decrease) in Restricted Cash					-39		6
Other					-1		0
Net cash used in investing activities					-703		-92
Net cash used in discontinued investing activities					-15		-57
Cash Flows From Financing Activities:
Repayments of Debt					-1		0
Proceeds from exercise of share options					7		62
Dividends paid							0
Repurchase of ordinary shares by treasury					-417		-250
Net intercompany loan borrowings					-24		38
Transfer (to) from discontinued operations					-12		20
Increase in equity from parent							9
Payment of contingent consideration					-23
Other					-17		-10
Net cash used in financing activities					-487		-131
Net cash provided by (used in) discontinued financing activities					12		-20
Effect of currency translation on cash					-16		-16
Net decrease in cash and cash equivalents					-460		-68
Cash and cash equivalents at beginning of period					892		563
Cash and cash equivalents at end of period	432		495		432		495
Consolidating Adjustments
Statements of Operations
Net revenue					0
Cost of product sales					0
Cost of services					0
Selling, general and administrative expenses					0
Other (expense) income, net					0
Equity in net income of subsidiaries	-470		-426		-873		-978
Intercompany interest and fees	0		0		0		0
Income from continuing operations before income taxes	-470		-426		-873		-978
Income from continuing operations	-470		-426		-873		-978
(Loss) income from discontinued operations, net of income taxes	0		0		0		0
Net income	-470		-426		-873		-978
Less: noncontrolling interest in subsidiaries net (loss) income					0
Net income attributable to Tyco ordinary shareholders	-470		-426		-873		-978
Statement of Comprehensive Income
Net income	-470		-426		-873		-978
Other comprehensive (loss) income, net of tax
Foreign currency translation	176		15		374		52
Defined benefit and post retirement plans	-4		-4		-9		-7
Total other comprehensive loss, net of tax	172		11		365		45
Comprehensive income	-298		-415		-508		-933
Less: comprehensive (loss) income attributable to noncontrolling interests			0				0
Comprehensive income (loss) attributable to Tyco ordinary shareholders	-298		-415		-508		-933
Cash Flows From Investing Activities:
Net Increase in Intercompany Loans					59		206
Increase in investment in subsidiaries							9
Net cash used in investing activities					59		215
Cash Flows From Financing Activities:
Net intercompany loan borrowings					-59		-206
Increase in equity from parent							-9
Other							0
Net cash used in financing activities					-59		-215
Net cash provided by (used in) discontinued financing activities					0		0
Effect of currency translation on cash							0
Cash and cash equivalents at end of period			0				0
Tyco Fire & Security Finance SCA [Member]
Statements of Operations
Net revenue					0
Cost of product sales					0
Cost of services					0
Selling, general and administrative expenses	0				0
Restructuring and asset impairment charges, net					0
Operating income	0				0
Interest income	0				0
Interest expense	0				0
Other (expense) income, net	0				0
Equity in net income of subsidiaries	158				291
Intercompany interest and fees	0				0
Income from continuing operations before income taxes	158				291
Income tax expense	0				0
Income from continuing operations	158				291
(Loss) income from discontinued operations, net of income taxes	0				0
Net income	158				291
Less: noncontrolling interest in subsidiaries net (loss) income					0
Net income attributable to Tyco ordinary shareholders	158				291
Statement of Comprehensive Income
Net income	158				291
Other comprehensive (loss) income, net of tax
Foreign currency translation	0				0
Defined benefit and post retirement plans	0				0
Total other comprehensive loss, net of tax	0				0
Comprehensive income	158				291
Comprehensive income (loss) attributable to Tyco ordinary shareholders	$158				$291
[1]	Net revenue by operating segment excludes intercompany transactions.

Guarantor_Financial_Statements3

Guarantor Financial Statements (Details 2) (USD $)	Mar. 27, 2015	Sep. 26, 2014	Mar. 28, 2014	Sep. 27, 2013
Current Assets:
Cash and cash equivalents	$432,000,000	$892,000,000	$495,000,000	$563,000,000
Accounts receivable, net	1,643,000,000	1,734,000,000
Inventories	677,000,000	625,000,000
Prepaid expenses and other current assets	867,000,000	1,051,000,000
Deferred income taxes	304,000,000	304,000,000
Assets held for sale	155,000,000	180,000,000
Total Current Assets	4,078,000,000	4,786,000,000
Property, plant and equipment, net	1,216,000,000	1,262,000,000
Goodwill	4,265,000,000	4,122,000,000		4,158,000,000
Intangible assets, net	908,000,000	712,000,000
Other assets	1,228,000,000	927,000,000
Total Assets	11,695,000,000	11,809,000,000
Current Liabilities:
Loans payable and current maturities of long-term debt	278,000,000	20,000,000
Accounts payable	735,000,000	825,000,000
Accrued and other current liabilities	1,959,000,000	2,114,000,000
Deferred revenue	405,000,000	400,000,000
Liabilities held for sale	102,000,000	118,000,000
Total Current Liabilities	3,479,000,000	3,477,000,000
Long-term debt	1,732,000,000	1,443,000,000
Deferred revenue	315,000,000	335,000,000
Other liabilities	1,927,000,000	1,871,000,000
Total Liabilities	7,453,000,000	7,126,000,000
Redeemable noncontrolling interest	12,000,000	13,000,000
Tyco Shareholders' Equity:
Common shares	4,000,000	208,000,000
Common shares held in treasury	0	-2,515,000,000
Other shareholders' equity	4,177,000,000	6,954,000,000
Total Tyco Shareholders' Equity	4,181,000,000	4,647,000,000
Nonredeemable noncontrolling interest	49,000,000	23,000,000
Total Equity	4,230,000,000	4,670,000,000	5,056,000,000	5,121,000,000
Total Liabilities, Redeemable Noncontrolling Interest and Equity	11,695,000,000	11,809,000,000
Tyco International plc
Current Assets:
Accounts receivable, net		0
Intercompany receivables	35,000,000	18,000,000
Prepaid expenses and other current assets	1,000,000	7,000,000
Total Current Assets	36,000,000	25,000,000
Investment in subsidiaries	10,846,000,000	12,738,000,000
Intercompany loans receivable	0	0
Other assets	1,000,000	26,000,000
Total Assets	10,883,000,000	12,789,000,000
Current Liabilities:
Accounts payable	0	1,000,000
Accrued and other current liabilities	93,000,000	191,000,000
Intercompany payables	3,463,000,000	3,517,000,000
Total Current Liabilities	3,556,000,000	3,709,000,000
Intercompany loans payable	3,146,000,000	4,180,000,000
Other liabilities	0	253,000,000
Total Liabilities	6,702,000,000	8,142,000,000
Tyco Shareholders' Equity:
Common shares	4,000,000	208,000,000
Other shareholders' equity	4,177,000,000	4,439,000,000
Total Tyco Shareholders' Equity	4,181,000,000	4,647,000,000
Total Equity	4,181,000,000	4,647,000,000
Total Liabilities, Redeemable Noncontrolling Interest and Equity	10,883,000,000	12,789,000,000
Tyco Fire & Security Finance SCA [Member]
Current Assets:
Intercompany receivables	0
Prepaid expenses and other current assets	0
Total Current Assets	0
Investment in subsidiaries	11,053,000,000
Intercompany loans receivable	0
Other assets	0
Total Assets	11,053,000,000
Current Liabilities:
Accounts payable	0
Accrued and other current liabilities	0
Intercompany payables	0
Total Current Liabilities	0
Intercompany loans payable	0
Other liabilities	0
Total Liabilities	0
Tyco Shareholders' Equity:
Common shares	0
Other shareholders' equity	11,053,000,000
Total Tyco Shareholders' Equity	11,053,000,000
Total Equity	11,053,000,000
Total Liabilities, Redeemable Noncontrolling Interest and Equity	11,053,000,000
Tyco International Finance S.A.
Current Assets:
Intercompany receivables	302,000,000	245,000,000
Prepaid expenses and other current assets	71,000,000	62,000,000
Total Current Assets	373,000,000	307,000,000
Investment in subsidiaries	15,805,000,000	16,209,000,000
Intercompany loans receivable	2,958,000,000	3,693,000,000
Other assets	32,000,000	4,000,000
Total Assets	19,168,000,000	20,213,000,000
Current Liabilities:
Loans payable and current maturities of long-term debt	258,000,000
Accrued and other current liabilities	66,000,000	23,000,000
Intercompany payables	3,909,000,000	4,593,000,000
Total Current Liabilities	4,233,000,000	4,616,000,000
Long-term debt	1,731,000,000	1,441,000,000
Intercompany loans payable	1,904,000,000	1,888,000,000
Other liabilities	247,000,000
Total Liabilities	8,115,000,000	7,945,000,000
Tyco Shareholders' Equity:
Other shareholders' equity	11,053,000,000	12,268,000,000
Total Tyco Shareholders' Equity	11,053,000,000	12,268,000,000
Total Equity	11,053,000,000	12,268,000,000
Total Liabilities, Redeemable Noncontrolling Interest and Equity	19,168,000,000	20,213,000,000
Other Subsidiaries
Current Assets:
Cash and cash equivalents	432,000,000	892,000,000	495,000,000	563,000,000
Accounts receivable, net	1,643,000,000	1,734,000,000
Inventories	677,000,000	625,000,000
Intercompany receivables	7,369,000,000	8,102,000,000
Prepaid expenses and other current assets	795,000,000	982,000,000
Deferred income taxes	304,000,000	304,000,000
Assets held for sale	155,000,000	180,000,000
Total Current Assets	11,375,000,000	12,819,000,000
Property, plant and equipment, net	1,216,000,000	1,262,000,000
Goodwill	4,265,000,000	4,122,000,000
Intangible assets, net	908,000,000	712,000,000
Intercompany loans receivable	5,050,000,000	5,346,000,000
Other assets	1,195,000,000	897,000,000
Total Assets	24,009,000,000	25,158,000,000
Current Liabilities:
Loans payable and current maturities of long-term debt	20,000,000	20,000,000
Accounts payable	735,000,000	824,000,000
Accrued and other current liabilities	1,800,000,000	1,900,000,000
Deferred revenue	405,000,000	400,000,000
Intercompany payables	334,000,000	255,000,000
Liabilities held for sale	102,000,000	118,000,000
Total Current Liabilities	3,396,000,000	3,517,000,000
Long-term debt	1,000,000	2,000,000
Intercompany loans payable	2,958,000,000	2,971,000,000
Deferred revenue	315,000,000	335,000,000
Other liabilities	1,680,000,000	1,618,000,000
Total Liabilities	8,350,000,000	8,443,000,000
Redeemable noncontrolling interest	12,000,000	13,000,000
Tyco Shareholders' Equity:
Common shares held in treasury		-2,515,000,000
Other shareholders' equity	15,598,000,000	19,194,000,000
Total Tyco Shareholders' Equity	15,598,000,000	16,679,000,000
Nonredeemable noncontrolling interest	49,000,000	23,000,000
Total Equity	15,647,000,000	16,702,000,000
Total Liabilities, Redeemable Noncontrolling Interest and Equity	24,009,000,000	25,158,000,000
Consolidating Adjustments
Current Assets:
Cash and cash equivalents			0
Intercompany receivables	-7,706,000,000	-8,365,000,000
Total Current Assets	-7,706,000,000	-8,365,000,000
Investment in subsidiaries	-37,704,000,000	-28,947,000,000
Intercompany loans receivable	-8,008,000,000	-9,039,000,000
Total Assets	-53,418,000,000	-46,351,000,000
Current Liabilities:
Intercompany payables	-7,706,000,000	-8,365,000,000
Total Current Liabilities	-7,706,000,000	-8,365,000,000
Intercompany loans payable	-8,008,000,000	-9,039,000,000
Total Liabilities	-15,714,000,000	-17,404,000,000
Tyco Shareholders' Equity:
Other shareholders' equity	-37,704,000,000	-28,947,000,000
Total Tyco Shareholders' Equity	-37,704,000,000	-28,947,000,000
Total Equity	-37,704,000,000	-28,947,000,000
Total Liabilities, Redeemable Noncontrolling Interest and Equity	($53,418,000,000)	($46,351,000,000)