Equity (Components Of Accumulated Other Comprehensive Income, Net Of Tax) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Oct. 01, 2017	Oct. 02, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 5,758.9	$ 5,803.1	$ 5,457.0	$ 5,890.7
Net gains/(losses) in AOCI, beginning of period	(155.6)
Other comprehensive income/(loss)	30.3	(133.9)
Net gains/(losses) in AOCI, end of period	(125.3)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(3.0)	(7.6)	(2.5)	1.1
Net gains/(losses) recognized in OCI before reclassifications	(1.8)	(9.3)
Net (gains)/losses reclassified from AOCI to earnings	1.3	0.6
Other comprehensive income/(loss)	(0.5)	(8.7)
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	(1.1)	31.6	(4.1)	10.9
Net gains/(losses) recognized in OCI before reclassifications	(2.9)	87.0
Net (gains)/losses reclassified from AOCI to earnings	5.9	(66.3)
Other comprehensive income/(loss)	3.0	20.7
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	13.7	27.2	14.0	1.3
Net gains/(losses) recognized in OCI before reclassifications	(0.2)	25.9
Net (gains)/losses reclassified from AOCI to earnings	(0.1)	0.0
Other comprehensive income/(loss)	(0.3)	25.9
Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(134.9)	(293.5)	(163.0)	(121.7)
Net gains/(losses) recognized in OCI before reclassifications	20.9	(171.8)
Net (gains)/losses reclassified from AOCI to earnings	7.2	0.0
Other comprehensive income/(loss)	28.1	(171.8)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(125.3)	(242.3)	$ (155.6)	$ (108.4)
Net gains/(losses) recognized in OCI before reclassifications	16.0	(68.2)
Net (gains)/losses reclassified from AOCI to earnings	14.3	(65.7)
Other comprehensive income/(loss)	$ 30.3	$ (133.9)