Accumulated Other Comprehensive Income (Schedule of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 30, 2016	Dec. 25, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ (85.6)	$ 0.9
Other comprehensive (loss) income before reclassifications	(15.8)	(9.4)
Amounts reclassified from accumulated other comprehensive income	28.9	(56.8)
Net current period other comprehensive (loss) income	13.1	(66.2)
Ending balance	(72.5)	(65.3)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	1.6	60.2
Other comprehensive (loss) income before reclassifications	(21.1)	(9.4)
Amounts reclassified from accumulated other comprehensive income	0.0	(58.7)
Net current period other comprehensive (loss) income	(21.1)	(68.1)
Ending balance	(19.5)	(7.9)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(5.9)	(6.4)
Other comprehensive (loss) income before reclassifications	0.0	0.0
Amounts reclassified from accumulated other comprehensive income	0.2	0.1
Net current period other comprehensive (loss) income	0.2	0.1
Ending balance	(5.7)	(6.3)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(81.3)	(52.9)
Other comprehensive (loss) income before reclassifications	5.3	0.0
Amounts reclassified from accumulated other comprehensive income	28.7	1.8
Net current period other comprehensive (loss) income	34.0	1.8
Ending balance	$ (47.3)	$ (51.1)