Equity (Components Of Accumulated Other Comprehensive Income, Net Of Tax) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Apr. 02, 2023	Mar. 31, 2024	Apr. 02, 2023	Dec. 31, 2023	Oct. 01, 2023	Jan. 01, 2023	Oct. 02, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ (8,442.2)	$ (8,499.4)	$ (8,442.2)	$ (8,499.4)	$ (8,608.9)	$ (7,987.8)	$ (8,665.9)	$ (8,698.7)
Net gains/(losses) in AOCI, beginning of period			(778.2)
Other comprehensive income	(63.7)	17.3	156.7	(58.4)
Net gains/(losses) in AOCI, end of period	(621.5)		(621.5)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		(10.9)		(10.9)	(7.9)	(12.3)	(13.9)	(15.5)
Net gains/(losses) recognized in OCI before reclassifications	(0.3)	2.8	3.9	4.3
Net (gains)/losses reclassified from AOCI to earnings	0.3	0.2	0.5	0.3
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	0.0	3.0	4.4	4.6
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		(88.1)		(88.1)	15.7	(47.5)	(34.9)	199.0
Net gains/(losses) recognized in OCI before reclassifications	27.1	(1.1)	60.7	(152.3)
Net (gains)/losses reclassified from AOCI to earnings	(2.2)	(52.1)	27.4	(134.8)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	24.9	(53.2)	88.1	(287.1)
Accumulated Net Investment Hedge Gain (Loss) Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		149.6		149.6	217.7	243.3	156.8	209.1
Net gains/(losses) recognized in OCI before reclassifications	69.2	(2.0)	50.3	(50.3)
Net (gains)/losses reclassified from AOCI to earnings	(7.7)	(5.2)	(14.4)	(9.2)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	61.5	(7.2)	35.9	(59.5)
Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		(572.2)		(572.2)	(783.3)	(961.7)	(646.9)	(855.8)
Net gains/(losses) recognized in OCI before reclassifications	(150.0)	74.7	28.2	283.6
Net (gains)/losses reclassified from AOCI to earnings	0.0	0.0	0.0	0.0
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	(150.0)	74.7	28.2	283.6
Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(8,449.4)	(8,506.9)	(8,449.4)	(8,506.9)	(8,616.0)	(7,994.8)	(8,673.8)	(8,706.6)
Other comprehensive income	(63.6)	17.3	156.6	(58.4)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(621.5)	(521.6)	(621.5)	(521.6)	$ (557.8)	$ (778.2)	$ (538.9)	$ (463.2)
Net gains/(losses) recognized in OCI before reclassifications	(54.0)	74.4	143.1	85.3
Net (gains)/losses reclassified from AOCI to earnings	(9.6)	(57.1)	13.5	(143.7)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	(63.6)	17.3	156.6	(58.4)
Other comprehensive income	(63.6)	$ 17.3	156.6	$ (58.4)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	0.0		0.0
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Including Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(7.9)		(7.9)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	0.0		0.0
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	40.6		40.6
Accumulated Net Investment Hedge Gain (Loss) Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	0.0		0.0
AOCI, Accumulated Net Investment Hedge Gain (Loss) Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	279.2		279.2
Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	(0.1)		0.1
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(933.4)		(933.4)
AOCI Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	(0.1)		0.1
AOCI Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ (621.5)		$ (621.5)