Tyco Electronics Group S.A. - Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Tyco Electronics Group S.A.
Ownership percentage in TEGSA	100.00%		100.00%
Statement of Operations Detail:
Net sales	$ 3,764	$ 3,367	$ 10,989	$ 9,657
Cost of sales	2,547	2,227	7,352	6,340
Gross margin	1,217	1,140	3,637	3,317
Selling, general, and administrative expenses, net	409	408	1,220	1,182
Research, development, and engineering expenses	181	168	539	485
Acquisition and integration costs	4	1	9	5
Restructuring and other charges, net	65	19	106	125
Operating income	558	544	1,763	1,520
Interest income	3	3	11	14
Interest expense	(25)	(32)	(80)	(95)
Other income (expense), net	(1)	(12)	2	(31)
Income from continuing operations before income taxes	535	503	1,696	1,408
Income tax expense	(81)	(71)	(789)	(164)
Income from continuing operations	454	432	907	1,244
Income (loss) from discontinued operations, net of income taxes		3	(3)	5
Net income	454	435	904	1,249
Other comprehensive income (loss)	(250)	78	(101)	36
Comprehensive income	204	513	803	1,285
Consolidating Adjustments
Statement of Operations Detail:
Equity in net income of subsidiaries	(990)	(1,037)	(2,134)	(2,778)
Equity in net income (loss) of subsidiaries of discontinued operations		(7)	6	(23)
Income from continuing operations before income taxes	(990)	(1,044)	(2,128)	(2,801)
Income from continuing operations		(1,044)	(2,128)	(2,801)
Net income	(990)	(1,044)	(2,128)	(2,801)
Other comprehensive income (loss)	505	(161)	175	(50)
Comprehensive income	(485)	(1,205)	(1,953)	(2,851)
TE Connectivity Ltd. | Consolidating Reportable entities
Statement of Operations Detail:
Selling, general, and administrative expenses, net	19	68	107	144
Operating income	(19)	(68)	(107)	(144)
Equity in net income of subsidiaries	491	507	1,062	1,409
Equity in net income (loss) of subsidiaries of discontinued operations		3	(3)	5
Intercompany interest income (expense), net	(18)	(7)	(48)	(21)
Income from continuing operations before income taxes	454	435	904	1,249
Income from continuing operations		435	904	1,249
Net income	454	435	904	1,249
Other comprehensive income (loss)	(250)	78	(101)	36
Comprehensive income	204	513	803	1,285
TEGSA | Consolidating Reportable entities
Statement of Operations Detail:
Selling, general, and administrative expenses, net		18	6	(52)
Operating income		(18)	(6)	52
Interest income			1
Interest expense	(24)	(32)	(79)	(95)
Equity in net income of subsidiaries	499	530	1,072	1,369
Equity in net income (loss) of subsidiaries of discontinued operations		4	(3)	18
Intercompany interest income (expense), net	16	27	74	83
Income from continuing operations before income taxes	491	511	1,059	1,427
Income from continuing operations		511	1,059	1,427
Income (loss) from discontinued operations, net of income taxes		(1)		(13)
Net income	491	510	1,059	1,414
Other comprehensive income (loss)	(250)	78	(101)	36
Comprehensive income	241	588	958	1,450
Other Subsidiaries | Consolidating Reportable entities
Statement of Operations Detail:
Net sales	3,764	3,367	10,989	9,657
Cost of sales	2,547	2,227	7,352	6,340
Gross margin	1,217	1,140	3,637	3,317
Selling, general, and administrative expenses, net	390	322	1,107	1,090
Research, development, and engineering expenses	181	168	539	485
Acquisition and integration costs	4	1	9	5
Restructuring and other charges, net	65	19	106	125
Operating income	577	630	1,876	1,612
Interest income	3	3	10	14
Interest expense	(1)		(1)
Other income (expense), net	(1)	(12)	2	(31)
Intercompany interest income (expense), net	2	(20)	(26)	(62)
Income from continuing operations before income taxes	580	601	1,861	1,533
Income tax expense	(81)	(71)	(789)	(164)
Income from continuing operations		530	1,072	1,369
Income (loss) from discontinued operations, net of income taxes		4	(3)	18
Net income	499	534	1,069	1,387
Other comprehensive income (loss)	(255)	83	(74)	14
Comprehensive income	$ 244	$ 617	$ 995	$ 1,401