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Notes Payable (Scheduled Repayments On Outstanding Debt) (Details) (USD $) In Millions, unless otherwise specified | Mar. 31, 2012
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2012 | $ 293.2 |
2013 | 228.0 |
2014 | 11.0 |
2015 | 252.4 |
2016 | 2.6 | [1]
2017 and thereafter | 1,643.9 |
Total notes payable | $ 2,431.1 |
Weighted Average Interest Rate | 4.80% |
Maturities Due In 2012 [Member] |  |
Weighted Average Interest Rate | 5.20% |
Maturities Due In 2013 [Member] |  |
Weighted Average Interest Rate | 5.40% |
Maturities Due In 2014 [Member] |  |
Weighted Average Interest Rate | 6.00% |
Maturities Due In 2015 [Member] |  |
Weighted Average Interest Rate | 5.10% |
Maturities Due In 2016 [Member] |  |
Weighted Average Interest Rate | 0.00% | [1]
Maturities Due In 2017 And Thereafter [Member] |  |
Weighted Average Interest Rate | 4.60% |
[1] | Includes only scheduled principal amortizations.

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- Definition Amount of long-term debt maturing within the remainder of the current year following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates. + References No definition available. + Details
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- Definition Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 7 -Section 03 -Paragraph 16 Reference 4: 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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 + Details
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