Accumulated Other Comprehensive Income (Components Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015		Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]			$ (495.5)		$ (371.6)
Other comprehensive (loss) income before reclassifications, net of tax (expense) benefit	[1]			(20.7)		(6.9)
Amounts reclassified from accumulated other comprehensive (loss) income	[1]			31.4		16.9
Net current period other comprehensive (loss) income		$ (1.4)	$ (0.7)	10.7	[1]	10.0	[1]
Ending Balance	[1]	(484.8)	(361.6)	(484.8)		(361.6)
Other comprehensive income before reclassifications, tax (expense) benefit				(1.7)		(1.8)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]			(8.3)		21.3
Other comprehensive (loss) income before reclassifications, net of tax (expense) benefit	[1]			(21.3)		(10.0)
Net current period other comprehensive (loss) income	[1]			(21.3)		(10.0)
Ending Balance	[1]	(29.6)	11.3	(29.6)		11.3
Other comprehensive income before reclassifications, tax (expense) benefit				0.0		0.0
Derivative Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]			(4.0)		(0.7)
Other comprehensive (loss) income before reclassifications, net of tax (expense) benefit	[1]			2.1		2.1
Amounts reclassified from accumulated other comprehensive (loss) income	[1]			(2.3)		(3.4)
Net current period other comprehensive (loss) income	[1]			(0.2)		(1.3)
Ending Balance	[1]	(4.2)	(2.0)	(4.2)		(2.0)
Other comprehensive income before reclassifications, tax (expense) benefit				(0.7)		(1.5)
Pension And Postretirement Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]			(483.2)		(392.2)
Other comprehensive (loss) income before reclassifications, net of tax (expense) benefit	[1]			(1.5)		1.0
Amounts reclassified from accumulated other comprehensive (loss) income	[1]			33.7		20.3
Net current period other comprehensive (loss) income	[1]			32.2		21.3
Ending Balance	[1]	$ (451.0)	$ (370.9)	(451.0)		(370.9)
Other comprehensive income before reclassifications, tax (expense) benefit				$ (1.0)		$ (0.3)

[1] Amounts are net of tax