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Cash Flow Information
3 Months Ended
Mar. 31, 2015
Supplemental Cash Flow Information [Abstract]  
Cash Flow Information
CASH FLOW INFORMATION
We consider all highly liquid investments with a maturity of three months or less as of the date of purchase to be cash equivalents unless the investments are legally or contractually restricted for more than three months. We had non-cash investing and financing activities primarily related to increases in property acquired under capital leases of $5.3 million for the three months ended March 31, 2015. We did not enter into any capital leases during the three months ended March 31, 2014. We also had accrued purchases of property and equipment of $12.8 million at March 31, 2015 and $13.2 million at March 31, 2014. The effect of non-cash transactions is excluded from the accompanying Unaudited Condensed Consolidated Statements of Cash Flows.
We made interest payments, including interest on vehicle inventory financing, of $31.5 million during the three months ended March 31, 2015, and $32.2 million during the three months ended March 31, 2014. We made income tax payments, net of income tax refunds, of $18.4 million during the three months ended March 31, 2015, and $8.9 million during the three months ended March 31, 2014.