Shareholders' Equity and Redeemable Noncontrolling Interest (Details) $ / shares in Units, SFr in Millions, $ in Millions	1 Months Ended	12 Months Ended
	Mar. 31, 2024	Mar. 28, 2025 installment $ / shares	Sep. 27, 2024 USD ($) $ / shares shares	Sep. 27, 2024 USD ($) € / shares shares	Mar. 29, 2024 installment $ / shares	Sep. 29, 2023 USD ($) $ / shares shares	Mar. 31, 2023 installment $ / shares	Sep. 30, 2022 USD ($) $ / shares shares	Mar. 25, 2022 installment $ / shares	Sep. 27, 2024 CHF (SFr) shares	Sep. 29, 2023 CHF (SFr) shares	Sep. 24, 2021 shares
Maximum percentage of conditional shares that we may authorize for issuance			50.00%
Swiss Law Capital Band, Maximum Duration of Authorization	1 year
Swiss Law Capital Band, Maximum Percentage of Increase of Share Capital	120.00%
Swiss Law Capital Band, Maximum Percentage of Reduction of Share Capital	80.00%
Dividends paid per common share | $ / shares			$ 2.48			$ 2.30		$ 2.12
Common shares held in treasury			16,656,681	16,656,681		10,487,742				16,656,681	10,487,742
Common shares held in treasury, owned by subsidiary			17,000,000	17,000,000		4,000,000				17,000,000	4,000,000
Cancellation of treasury shares (in shares)			6,000,000			8,500,000		5,000,000
Contributed surplus established for Swiss tax and statutory purposes ("Swiss Contributed Surplus")			$ 1,657	$ 1,657		$ 2,454				SFr 2,862	SFr 3,562
Dividend or cash distribution approved (in currency per share) | $ / shares		$ 2.60			$ 2.36		$ 2.24		$ 2.00
Number of quarterly dividend installments | installment		4			4		4		4
Cash distribution quarterly installment payable (in dollars per share) | $ / shares		$ 0.65			$ 0.59		$ 0.56		$ 0.50
Unpaid portion of the dividend payment recorded in accrued and other current liabilities | $			390	390		368
Share repurchase program, increase in authorized amount | $			1,500
Repurchase value | $			1,991			$ 946		$ 1,409
Amount available for repurchase, at end of period | $			$ 245	$ 245
First Sensor AG
Percentage of voting interest acquired			72.00%	72.00%						72.00%
First Sensor minority shareholders exchange compensation amount (in euro per share) | € / shares				$ 33.27
First Sensor minority shareholders recurring annual compensation (in euro per share) | € / shares				$ 0.56
Treasury Shares
Common shares held in treasury			(17,000,000)	(17,000,000)		(10,000,000)		(13,000,000)		(17,000,000)	(10,000,000)	(9,000,000)
Cancellation of treasury shares (in shares)			6,000,000			9,000,000		5,000,000
Number of common shares repurchased			14,000,000			8,000,000		10,000,000
Repurchase value | $			$ 1,991			$ 946		$ 1,409