Accumulated Other Comprehensive Income (Schedule of Accumulated Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 26, 2014	Dec. 27, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 65.7	$ 108.5
Other comprehensive (loss) income before reclassifications	(22.1)	0.4
Amounts reclassified from accumulated other comprehensive income	0.8	(0.2)
Net current period other comprehensive (loss) income	(21.3)	0.2
Ending balance	44.4	108.7
Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	131.0	158.6
Other comprehensive (loss) income before reclassifications	(22.4)	0.4
Amounts reclassified from accumulated other comprehensive income	0	0
Net current period other comprehensive (loss) income	(22.4)	0.4
Ending balance	108.6	159.0
Unrecognized Gain (Loss) on Derivatives
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(6.8)	(7.3)
Other comprehensive (loss) income before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income	0.1	0.1
Net current period other comprehensive (loss) income	0.1	0.1
Ending balance	(6.7)	(7.2)
Unrecognized Gain (Loss) on Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(58.5)	(42.8)
Other comprehensive (loss) income before reclassifications	0.3	0
Amounts reclassified from accumulated other comprehensive income	0.7	(0.3)
Net current period other comprehensive (loss) income	1.0	(0.3)
Ending balance	$ (57.5)	$ (43.1)