Accumulated Other Comprehensive Income (Schedule of Reclassifications out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Mar. 25, 2016		Mar. 27, 2015		Mar. 25, 2016		Mar. 27, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications for the period					$ (53.0)		$ 2.4
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of unrealized gain on derivatives, before tax	$ 0.2		$ 0.2		0.3		0.3
Amortization of unrealized gain on derivatives, tax	0.0		(0.1)		0.0		(0.1)
Amortization of unrealized gain on derivatives, net of tax	0.2		0.1		0.3		0.2
Amortization of pension and post-retirement plans, net actuarial loss	2.6	[1]	2.4	[2]	5.2	[1]	4.7	[2]
Amortization of pension and post-retirement plans, prior service cost	(0.7)	[1]	(1.2)	[2]	(1.3)	[1]	(2.3)	[2]
Disposal of discontinued operations	0.0				0.8
Plan settlements	3.7	[1]	1.2	[2]	3.7	[1]	1.2	[2]
Total before tax	5.6		2.4		8.4		3.6
Amortization of pension and post-retirement plans, tax	(2.0)		(0.9)		(3.0)		(1.4)
Amortization of pension and post-retirement plans, net of tax	3.6		1.5		5.4		2.2
Currency translation	0.0				(58.7)
Total reclassifications for the period	$ 3.8		$ 1.6		$ (53.0)		$ 2.4

[1] These accumulated other comprehensive income components are included in the computation of net periodic benefit cost. See Note 12 for additional details.

[2] These accumulated other comprehensive income components are included in the computation of net periodic benefit cost. See Note 12 for additional details.