Acquisitions (Details) $ / shares in Units, $ in Millions		3 Months Ended								12 Months Ended
	Oct. 09, 2014 USD ($) $ / shares	Sep. 25, 2015 USD ($)	Jun. 26, 2015 USD ($)	Mar. 27, 2015 USD ($)	Dec. 26, 2014 USD ($)	Sep. 26, 2014 USD ($)	Jun. 27, 2014 USD ($)	Mar. 28, 2014 USD ($)	Dec. 27, 2013 USD ($)	Sep. 25, 2015 USD ($) item $ / shares	Sep. 26, 2014 USD ($) item $ / shares	Sep. 27, 2013 USD ($)
Acquisition
Net cash paid										$ 1,725	$ 522	$ 6
Allocation of the purchase price
Goodwill		$ 4,824				$ 3,726				4,824	3,726	3,452
Net cash paid										1,725	522	6
Net sales		$ 2,984	$ 3,118	$ 3,082	$ 3,049	$ 3,072	$ 3,075	$ 2,964	$ 2,862	12,233	11,973	$ 11,390
Amortization of fair value adjustments to inventories and customer order backlog					$ 27
Measurement Specialties
Acquisition
Percentage of voting interest acquired	100.00%
Total transaction value	$ 1,700
Per share value of the purchase (in dollars per share) | $ / shares	$ 86.00
Repayment of debt and accrued interest	$ 225
Net cash paid	1,484
Allocation of the purchase price
Cash and cash equivalents	37
Trade accounts receivable	84
Inventories	110
Other current assets	20
Property, plant, and equipment	95
Goodwill	1,064
Intangible assets	547
Other non-current assets	9
Total assets acquired	1,966
Current maturities of long-term debt	20
Trade accounts payable	48
Other current liabilities	67
Long-term Debt	203
Deferred income taxes	98
Other non-current liabilities	9
Total liabilities assumed	445
Net assets acquired	1,521
Cash and cash equivalents acquired	(37)
Net cash paid	1,484
Goodwill deductible from prior acquisitions	$ 23
Net sales										548
Pro forma financial information
Net sales										12,252	12,429
Net income attributable to TE Connectivity Ltd.										$ 2,440	$ 1,744
Diluted earnings per common share attributable to TE Connectivity Ltd | $ / shares										$ 5.94	$ 4.18
Acquisition costs										$ 16
Fair value adjustment to acquisition-date inventories										11	$ (11)
Amortization of the fair value of acquired intangible assets										1	(20)
Adjustments to income tax expense based on changes in our global tax position										6	(19)
Fair value adjustments related to acquired customer order backlog										7	(7)
Interest expense based on changes in capital structure										(3)	(14)
Share-based compensation expense										$ 15
Charges related to depreciation expense											$ (2)
Other Acquisitions
Acquisition
Number of additional companies acquired | item										3	5
Net cash paid										$ 241	$ 522
Allocation of the purchase price
Net cash paid										$ 241	$ 522