Changes In Equity And Comprehensive Income (Classification Of Accumulated Other Comprehensive Income Reflected On Consolidated Balance Sheets) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended			12 Months Ended
	Mar. 31, 2015		Mar. 31, 2014	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, beginning balance	$ (298.8)
Other comprehensive income before reclassifications	(70.7)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax			(1.5)
Amounts reclassified from accumulated other comprehensive income	2.0
Net current-period othre comprehensive income (loss)	(68.7)
Accumulated other comprehensive loss, ending balance	(367.5)			(298.8)
Changes in pension and post-retirement plan assets and benefit obligation, Tax benefit			113.5	114.4
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, beginning balance	(257.8)	[1]
Other comprehensive income before reclassifications	0	[1]
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	(2.0)
Net current-period othre comprehensive income (loss)	2.0	[1]
Accumulated other comprehensive loss, ending balance	(255.8)	[1]
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, beginning balance	(40.9)
Other comprehensive income before reclassifications	(70.7)
Amounts reclassified from accumulated other comprehensive income	0
Net current-period othre comprehensive income (loss)	(70.7)
Accumulated other comprehensive loss, ending balance	$ (111.6)

[1] Net of tax benefit of $113.5 million and $114.4 million for March 31, 2015 and December 31, 2014, respectively.