Unaudited Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
ASSETS
Cash and cash equivalents	$ 67.5	$ 69.2
Receivables, net	651.8	740.9
Inventory	2,691.4	2,827.2
Other current assets	196.2	192.7
Total Current Assets	3,606.9	3,830.0
PROPERTY AND EQUIPMENT, net of accumulated depreciation of $942.3 million and $883.7 million, respectively	2,293.4	2,235.3
GOODWILL	1,265.3	1,259.6
OTHER INTANGIBLE ASSETS, NET	339.1	335.1
OTHER ASSETS	289.0	254.1
Total Assets	7,793.7	7,914.1
LIABILITIES AND SHAREHOLDERS’ EQUITY
Vehicle floorplan payable	2,774.7	3,029.0
Accounts payable	251.1	263.0
Current maturities of long-term debt	17.5	30.1
Other current liabilities	499.2	429.7
Total Current Liabilities	3,542.5	3,751.8
LONG-TERM DEBT, NET OF CURRENT MATURITIES	1,915.5	1,809.8
DEFERRED INCOME TAXES	129.4	116.5
OTHER LIABILITIES	194.3	174.3
COMMITMENTS AND CONTINGENCIES (Note 11)
SHAREHOLDERS’ EQUITY:
Preferred stock, par value $0.01 per share; 5,000,000 shares authorized; none issued	0	0
Common stock, par value $0.01 per share; 1,500,000,000 shares authorized; 163,562,149 shares issued at September 30, 2014, and December 31, 2013, including shares held in treasury	1.6	1.6
Additional paid-in capital	55.6	42.8
Retained earnings	3,639.9	3,337.9
Treasury stock, at cost; 49,033,894 and 42,646,753 shares held, respectively	(1,685.1)	(1,320.6)
Total Shareholders’ Equity	2,012.0	2,061.7
Total Liabilities and Shareholders’ Equity	7,793.7	7,914.1
Trade [Member]
LIABILITIES AND SHAREHOLDERS’ EQUITY
Vehicle floorplan payable	1,912.6	2,130.1
Non-Trade [Member]
LIABILITIES AND SHAREHOLDERS’ EQUITY
Vehicle floorplan payable	$ 862.1	$ 898.9