All Identifiable Assets in Each geographic Area (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting, Asset Reconciling Item [Line Items]
Identifiable assets	$ 5,696.2	[1]	$ 5,106.4	[1]	$ 3,837.3	[1]
Domestic
Segment Reporting, Asset Reconciling Item [Line Items]
Identifiable assets	4,482.7		3,817.0
Foreign
Segment Reporting, Asset Reconciling Item [Line Items]
Identifiable assets	$ 1,213.5		$ 1,289.4

[1] Corporate assets (including cash and cash equivalents) of $736.8, $599.4 and $304.6 at December 31, 2013, 2012 and 2011, respectively, have been allocated to the above segments in a manner consistent with our corporate expense allocations.