Effect of Corrections on Company's Consolidated Statements of Cash Flows (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Net income	$ 272.2	$ 274.3
Deferred income taxes	(1.5)	54.9
Change in accounts receivable	12.4	35.6
Change in inventory	124.3	110.3
Change in other assets	(46.3)	15.8
Change in accrued expenses and other liabilities	(161.0)	(103.5)
As Previously Reported
Net income		256.1
Deferred income taxes		67.0
Change in accounts receivable		(36.4)
Change in inventory		(105.6)
Change in other assets		(9.9)
Change in accrued expenses and other liabilities		(107.2)
Adjustment
Net income		18.2
Deferred income taxes		(12.1)
Change in accounts receivable		0.8
Change in inventory		(4.7)
Change in other assets		(5.9)
Change in accrued expenses and other liabilities		3.7
As Revised
Net income		274.3
Deferred income taxes		54.9
Change in accounts receivable		(35.6)
Change in inventory		(110.3)
Change in other assets		(15.8)
Change in accrued expenses and other liabilities		$ (103.5)