Stockholders' Equity (Deficit) Accumulated Other Comprehensive Income and Redeemable Noncontrolling Interest - Reclassification Out of Accumulated Other Comprehensive Income (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income taxes	$ 2.9	$ 0.5	$ 6.2	$ 6.4
Benefit Plan Liabilities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	1.3		3.9
Provision for income taxes	0.1		0.4
Net of tax	1.2		3.5
Benefit Plan Liabilities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Warehousing, delivery, selling, general and administrative [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Actuarial gain	1.6		4.9
Prior service credits	$ (0.3)		$ (1.0)