v2.4.0.6

Notes Payable (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended |  | 3 Months Ended | 9 Months Ended |  | 3 Months Ended |  |  | 3 Months Ended | 9 Months Ended |  | 3 Months Ended | 9 Months Ended |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011 | Dec. 31, 2011 | Sep. 30, 2012 Notes Payable under Revolving Credit Agreement [Member] | Sep. 30, 2011 Notes Payable under Revolving Credit Agreement [Member] | Sep. 30, 2012 Notes Payable under Revolving Credit Agreement [Member] | Sep. 30, 2011 Notes Payable under Revolving Credit Agreement [Member] | Sep. 30, 2012 Notes Payable under Revolving Credit Agreement [Member] 2016 Credit Agreement [Member] | Mar. 07, 2012 Notes Payable under Revolving Credit Agreement [Member] 2016 Credit Agreement [Member] | Mar. 31, 2012 Notes Payable under Revolving Credit Agreement [Member] Former Credit Agreement [Member] | Mar. 07, 2012 Notes Payable under Revolving Credit Agreement [Member] Former Credit Agreement [Member] | Dec. 31, 2011 Notes Payable under Revolving Credit Agreement [Member] Former Credit Agreement [Member] | Sep. 30, 2012 Senior Subordinated Notes [Member] Senior Notes, 6 Percent Due May 15, 2017 [Member] | Sep. 30, 2011 Senior Subordinated Notes [Member] Senior Notes, 6 Percent Due May 15, 2017 [Member] | Sep. 30, 2012 Senior Subordinated Notes [Member] Senior Notes, 6 Percent Due May 15, 2017 [Member] | Sep. 30, 2011 Senior Subordinated Notes [Member] Senior Notes, 6 Percent Due May 15, 2017 [Member] | Dec. 31, 2011 Senior Subordinated Notes [Member] Senior Notes, 6 Percent Due May 15, 2017 [Member] | Sep. 30, 2012 Senior Subordinated Notes [Member] Senior Notes, 6 Percent Due November 30, 2015 [Member] | Sep. 30, 2011 Senior Subordinated Notes [Member] Senior Notes, 6 Percent Due November 30, 2015 [Member] | Sep. 30, 2012 Senior Subordinated Notes [Member] Senior Notes, 6 Percent Due November 30, 2015 [Member] | Sep. 30, 2011 Senior Subordinated Notes [Member] Senior Notes, 6 Percent Due November 30, 2015 [Member] | Dec. 31, 2011 Senior Subordinated Notes [Member] Senior Notes, 6 Percent Due November 30, 2015 [Member] | Sep. 30, 2012 Mortgage Note Payabe at Amortized Cost [Member] | Sep. 30, 2011 Mortgage Note Payabe at Amortized Cost [Member] | Sep. 30, 2012 Mortgage Note Payabe at Amortized Cost [Member] | Sep. 30, 2011 Mortgage Note Payabe at Amortized Cost [Member] | Dec. 31, 2011 Mortgage Note Payabe at Amortized Cost [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notes Payable | $ 611.2 |  | $ 611.2 |  | $ 610.6 |  |  |  |  |  |  |  |  |  | $ 357.2 |  | $ 357.2 |  | $ 356.8 | $ 248.5 |  | $ 248.5 |  | $ 248.2 | $ 5.5 |  | $ 5.5 |  | $ 5.6
Notes Payable, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.00% |  | 6.00% |  |  | 6.00% |  | 6.00% |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  | 325.0 |  | 245.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Length of Agreement |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Amount Outstanding |  |  |  |  |  |  |  |  |  | 0 |  |  | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  |  |  |  |  |  |  | 325.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Write off of Deferred Debt Issuance Cost |  |  |  |  |  |  |  |  |  |  |  | 0.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Expense before Capitalization of Interest | 9.8 | 10.0 | 30.1 | 29.8 |  | 0.3 | 0.6 | 1.6 | 1.5 |  |  |  |  |  | 5.5 | 5.5 | 16.6 | 16.5 |  | 3.9 | 3.8 | 11.6 | 11.5 |  | 0.1 | 0.1 | 0.3 | 0.3 |
Capitalization of Interest | (0.2) | (0.7) | (1.6) | (1.8) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Expense | 9.6 | 9.3 | 28.5 | 28.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Paid | $ 0.3 | $ 0.4 | $ 20.5 | $ 19.4 |  | $ 0.2 | $ 0.3 | $ 1.9 | $ 0.5 |  |  |  |  |  | $ 0 | $ 0 | $ 10.8 | $ 10.8 |  | $ 0 | $ 0 | $ 7.5 | $ 7.8 |  | $ 0.1 | $ 0.1 | $ 0.3 | $ 0.3 |

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- Definition Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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