Quarterly Financial Data (unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Jun. 24, 2016	Mar. 25, 2016	Dec. 25, 2015	Sep. 25, 2015	Jun. 26, 2015	Mar. 27, 2015	Dec. 26, 2014	Sep. 30, 2016	Sep. 25, 2015	Sep. 26, 2014
Quarterly Financial Data (unaudited)
Net sales	$ 3,332	$ 3,121	$ 2,952	$ 2,833	$ 2,984	$ 3,118	$ 3,082	$ 3,049	$ 12,238	$ 12,233	$ 11,973
Gross margin	1,104	1,022	962	945	968	1,048	1,051	1,020	4,033	4,087	3,972
Acquisition and integration costs	3	11	3	5	9	8	14	24	22	55	31
Restructuring and other charges (credits), net	30	31	(99)	40	70	19	38	25	2	152	19
Amounts attributable to TE Connectivity Ltd.:
Income from continuing operations	437	791	389	324	136	351	316	435	1,941	1,238	1,614
Income (loss) from discontinued operations, net of income taxes		48	(9)	29	904	(42)	283	37	68	1,182	167
Net Income	$ 437	839	$ 380	$ 353	1,040	$ 309	$ 599	472	2,009	2,420	1,781
Gain on divestiture									144
Income tax benefit associated with settlement of certain U.S. tax matters		1,135			63			189	1,135	264
Other nonoperating expense, settlement of certain U.S. tax matters		604						83	604	84
Valuation allowance for certain U.S. tax loss carryforwards and tax credits									97	(3)	$ (239)
Net income tax benefit related to tax settlements in certain other jurisdictions		83							83
Other nonoperating expense, tax settlement in an other jurisdiction		$ 46							$ 46
Amortization of fair value adjustments to inventories and customer order backlog								$ 27
Income tax charges associated with intercompany legal entity restructurings					$ 216					$ 216
Basic earnings per share attributable to TE Connectivity Ltd.:
Income from continuing operations (in dollars per share)	$ 1.23	$ 2.22	$ 1.07	$ 0.84	$ 0.34	$ 0.86	$ 0.78	$ 1.07	$ 5.30	$ 3.06	$ 3.94
Net income (in dollars per share)	1.23	2.35	1.04	0.92	2.60	0.76	1.47	1.16	5.49	5.98	4.34
Diluted earnings per share attributable to TE Connectivity Ltd.:
Income from continuing operations (in dollars per share)	1.22	2.19	1.06	0.83	0.34	0.85	0.77	1.05	5.26	3.01	3.87
Net income (in dollars per share)	$ 1.22	$ 2.32	$ 1.03	$ 0.91	$ 2.57	$ 0.75	$ 1.45	$ 1.14	$ 5.44	$ 5.89	$ 4.27
Certain U.S. Deferred Tax Assets
Amounts attributable to TE Connectivity Ltd.:
Valuation allowance for certain U.S. tax loss carryforwards and tax credits		$ 91							$ 91
Circuit Protection Devices
Amounts attributable to TE Connectivity Ltd.:
Gain on divestiture			$ 146						$ 144