Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 02, 2023	Jul. 03, 2022	Jul. 02, 2023	Jul. 03, 2022
Net earnings including noncontrolling interests	$ 1,141.9	$ 913.7	$ 2,905.4	$ 2,404.8
Other comprehensive loss, net of tax:
Other comprehensive income/(loss)	(255.9)	(325.3)	(314.3)	(212.2)
Comprehensive income including noncontrolling interests	886.0	588.4	2,591.1	2,192.6
Comprehensive income attributable to noncontrolling interests	(0.5)	0.8	(0.5)	1.5
Comprehensive income attributable to Starbucks	886.5	587.6	2,591.6	2,191.1
Available-for-sale Securities [Member]
Other comprehensive loss, net of tax:
Unrealized holding gains/(losses) on available-for-sale securities, before tax	(2.2)	(2.1)	3.4	(16.0)
Unrealized holding gains/(losses) on available-for-sale securities, tax (expense)/benefit	0.5	0.5	(0.8)	3.9
Cash Flow Hedging [Member]
Other comprehensive loss, net of tax:
Unrealized gains/(losses) on hedging instruments, before tax	4.6	54.4	(177.3)	210.3
Unrealized gains/(losses) on hedging instruments, tax (expense)/benefit	(3.8)	(13.4)	25.8	(39.5)
Net Investment Hedging [Member]
Other comprehensive loss, net of tax:
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax	101.0	109.2	33.7	188.8
Reclassification adjustment for net (gains)/losses realized in net earnings for available-for-sale securities, hedging instruments, and translation adjustment, tax expense/(benefit)	(25.5)	(27.6)	(8.5)	(47.7)
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest
Other comprehensive loss, net of tax:
Translation adjustment and other, before tax	(318.1)	(396.9)	(34.5)	(421.2)
Translation adjustment and other, tax (expense)/benefit	0.0	0.0	0.0	0.0
Translation Adjustment [Member]
Other comprehensive loss, net of tax:
Other comprehensive income/(loss)	(317.4)	(396.9)	(33.8)	(421.1)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Other comprehensive loss, net of tax:
Reclassification adjustment for net (gains)/losses realized in net earnings for available-for-sale securities, hedging instruments, and translation adjustment, before tax	(16.5)	(59.2)	(181.5)	(109.5)
Reclassification adjustment for net (gains)/losses realized in net earnings for available-for-sale securities, hedging instruments, and translation adjustment, tax expense/(benefit)	$ 4.1	$ 9.8	$ 25.4	$ 18.7