Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income (loss)	$ 50.9	$ 28.3
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	52.0	52.0
Equity-based compensation expense	3.3	1.9
Deferred income taxes	(22.1)	(14.1)
Amortization of deferred financing costs, debt premium and debt discount, net	1.6	3.0
Net loss on extinguishments of long-term debt	5.4	3.9
Changes in assets and liabilities:
Accounts receivable	113.2	18.8
Merchandise inventory	(6.5)	(43.9)
Other assets	(25.7)	(19.6)
Accounts payable-trade	21.5	124.2
Other current liabilities	52.0	57.6
Long-term liabilities	0.7	(4.1)
Net cash provided by operating activities	246.3	208.0
Cash flows from investing activities:
Capital expenditures	(9.3)	(8.8)
Payment of accrued charitable contribution related to the MPK Coworker Incentive Plan II	(20.9)	0
Net cash used in investing activities	(30.2)	(8.8)
Cash flows from financing activities:
Repayments of long-term debt	(3.9)	(40.0)
Payments to extinguish long-term debt	(79.5)	(53.1)
Net change in accounts payable-inventory financing	(6.4)	3.7
Proceeds from stock option exercises	0.1	0
Dividends paid	7.3	0
Repurchase of common shares	0	(0.1)
Net cash used in financing activities	(97.0)	(89.5)
Effect of exchange rate changes on cash and cash equivalents	(0.5)	(0.5)
Net increase (decrease) in cash and cash equivalents	118.6	109.2
Cash and cash equivalents - beginning of period	188.1
Cash and cash equivalents - end of period	306.7	188.1
Supplementary disclosure of cash flow information:
Interest paid	(16.1)	(16.2)
Taxes paid, net	$ (9.5)	$ (1.7)