XML 24 R52.htm IDEA: XBRL DOCUMENT v2.4.0.6
Debt (Narrative) (Details) (USD $)
 3 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Oct. 24, 2012
Dec. 31, 2011
Sep. 30, 2012
Unsecured Debt [Member]
Jul. 02, 2012
Unsecured Debt [Member]
Jun. 30, 2012
Unsecured Debt [Member]
Dec. 31, 2011
Unsecured Debt [Member]
Sep. 30, 2012
Letter of Credit [Member]
Dec. 31, 2011
Letter of Credit [Member]
Sep. 30, 2012
Repurchse Agreement [Member]
Financial Services [Member]
Debt Instrument [Line Items]                          
Extinguishment of Debt, Amount $ 96,400,000   $ 96,400,000 $ 13,900,000                  
Early Repayment of Senior Debt       53,000,000                  
Gains (Losses) on Extinguishment of Debt 0 0 0 (3,537,000)                  
Subsequent Event, Date Oct. 24, 2012                        
Amount of Tender Offer to Buyback Senior Notes         1,000,000,000                
Letters of Credit Outstanding, Amount 190,700,000   190,700,000     235,900,000 133,600,000     152,700,000 57,100,000 83,200,000  
Credit facility expiration date             Jun. 01, 2014           Sep. 27, 2013
Maximum Borrowing Capacity             150,000,000   200,000,000       150,000,000
Date line of credit capacity reduced               Jul. 02, 2012          
Line of Credit Facility, Initiation Date                         Sep. 28, 2012
Line of Credit Facility, Amount Outstanding $ 103,000,000   $ 103,000,000     $ 0             $ 103,000,000