Unaudited Condensed Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES:
Net income	$ 111.5us-gaap_NetIncomeLoss	$ 95.1us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Loss from discontinued operations	0.2	0.4
Depreciation and amortization	28.7	25.6
Amortization of debt issuance costs and accretion of debt discounts	1.1	1.4
Stock-based compensation expense	11.1us-gaap_ShareBasedCompensation	7.3us-gaap_ShareBasedCompensation
Deferred income tax provision	2.7	1.5
Net gain related to business/property dispositions	(1.5)us-gaap_GainLossOnDispositionOfAssets1	(8.3)us-gaap_GainLossOnDispositionOfAssets1
Non-cash impairment charges	0.2us-gaap_TangibleAssetImpairmentCharges	0.3us-gaap_TangibleAssetImpairmentCharges
Excess tax benefit from stock-based awards	(8.1)	(5.7)
Other	(0.8)us-gaap_OtherNoncashIncomeExpense	(1.2)us-gaap_OtherNoncashIncomeExpense
(Increase) decrease, net of effects from business combinations and divestitures:
Receivables	38.5	74.0
Inventory	(23.0)us-gaap_IncreaseDecreaseInInventories	115.5us-gaap_IncreaseDecreaseInInventories
Other assets	1.4	(11.9)
Increase (decrease), net of effects from business combinations and divestitures:
Vehicle floorplan payable - trade, net	(43.6)	(143.2)
Accounts payable	26.6	(0.6)
Other liabilities	54.8	65.7
Net cash provided by continuing operations	199.8	215.9
Net cash used in discontinued operations	(0.2)	(0.3)
Net cash provided by operating activities	199.6	215.6
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES:
Purchases of property and equipment	(66.4)	(49.3)
Property operating lease buy-outs	0	(0.4)
Proceeds from the sale of property and equipment	0.2	0
Proceeds from assets held for sale	0	0.2
Cash received from business divestitures, net of cash relinquished	15.7	10.0
Cash used in business acquisitions, net of cash acquired	(27.7)	0
Proceeds from the sale of restricted investments	0	0.5
Other	(1.4)	(3.3)
Net cash used in continuing operations	(79.6)	(42.3)
Net cash used in discontinued operations	0	0
Net cash used in investing activities	(79.6)	(42.3)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES:
Repurchases of common stock	(9.6)	(116.2)
Proceeds from revolving credit facility	540.0	290.0
Payments of revolving credit facility	(615.0)	(305.0)
Net payments of vehicle floorplan payable - non-trade	(54.1)	(41.9)
Payments of mortgage facility	(2.4)us-gaap_RepaymentsOfFirstMortgageBond	(2.3)us-gaap_RepaymentsOfFirstMortgageBond
Payments of capital leases and other debt obligations	(0.7)	(18.9)
Proceeds from the exercise of stock options	12.4	15.3
Excess tax benefit from stock-based awards	8.1	5.7
Net cash used in continuing operations	(121.3)	(173.3)
Net cash used in discontinued operations	0	0
Net cash used in financing activities	(121.3)	(173.3)
DECREASE IN CASH AND CASH EQUIVALENTS	(1.3)	0
CASH AND CASH EQUIVALENTS at beginning of period	75.4	69.2
CASH AND CASH EQUIVALENTS at end of period	$ 74.1	$ 69.2

The aggregate expense recognized in the current period that reflects the allocation of the cost of tangible assets and intangible assets over the assets' useful lives. This concept does not include the amortization of debt financing costs and discounts.

No definition available.