Other Income, Net - Schedule of Components of Other Income (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Securities earnings:
Dividends and interest	$ 26.4	$ 28.4	$ 29.2
Securities transactions, net	0.2	21.8	(0.6)
Total	26.6	50.2	28.6
Equity in earnings	0.5	(0.2)	(0.5)
Insurance recoveries	9.4	3.3	16.9
Currency transactions, net	(3.8)	(1.0)	3.0
Disposal of property and equipment, net	(0.5)	1.5	(0.9)
Gain on bargain purchase and remeasurement of our existing investment in acquiree	54.6
Litigation settlement gains		14.7
Other, net	1.2	2.1	1.9
Total	$ 88.0	$ 70.6	$ 49.0

Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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