Long-term Debt (Tables)

6 Months Ended

Jun. 30, 2012

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

Amounts borrowed, outstanding letters of credit and amounts available to borrow, net of certain reserves required under the Credit Facility, were as follows (in millions):

	June 30,		December 31,
	2012		2011
Amounts borrowed	$	47.5	$	62.0
Outstanding letters of credit	$	20.9	$	23.7
Amounts available to borrow	$	121.4	$	106.2

Total long-term debt consists of the following (in millions):

	June 30,		December 31,
	2012		2011
Amounts borrowed (Credit Facility)	$	47.5	$	62.0
Obligations under capital leases	1.2		1.1
Total long-term debt	$	48.7	$	63.1