Depreciation of Revenue Earning Equipment and Lease Charges (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Depreciation of Revenue Earning Equipment and Lease Charges

Depreciation of revenue earning equipment and lease charges

	Three Months Ended March 31,
	2013			2012
Depreciation of revenue earning equipment	$	573.0		$	531.4
Adjustment of depreciation upon disposal of revenue earning equipment	(1.3		)	(39.4		)
Rents paid for vehicles leased	15.3			23.1
Total	$	587.0		$	515.1

Depreciation of revenue earning equipment and lease charges includes the following (in millions of dollars):

	Years Ended December 31,
	2012			2011			2010
Depreciation of revenue earning equipment	$	2,165.2		$	1,921.8		$	1,747.0
Adjustment of depreciation upon disposal of revenue earning equipment	(96.8		)	(112.2		)	42.9
Rents paid for vehicles leased	79.8			96.1			78.2
Total	$	2,148.2		$	1,905.7		$	1,868.1