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Notes Payable (Tables) | 3 Months Ended
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Mar. 31, 2014
Notes Payable [Abstract] |
Summary Of Indebtedness | The following is a summary of our indebtedness:
| Balance at
(in millions) | March 31, 2014 |  | December 31, 2013
Commercial Banks |  |  |
Unsecured line of credit and short-term borrowings | $ | 60.0 |  |  | $ | — |
Senior unsecured notes |  |  |
5.08% Notes, due 2015 | 249.8 |  |  | 249.7 |
5.75% Notes, due 2017 | 246.4 |  |  | 246.4 |
4.70% Notes, due 2021 | 248.9 |  |  | 248.8 |
3.07% Notes, due 2022 | 346.7 |  |  | 346.7 |
5.00% Notes, due 2023 | 247.7 |  |  | 247.7 |
4.27% Notes, due 2024 | 249.5 |  |  | 249.5 |
| 1,589.0 |  |  | 1,588.8 |
Total unsecured notes payable | 1,649.0 |  |  | 1,588.8 |
Secured notes |  |  |
0.93% – 6.00% Conventional Mortgage Notes, due 2014 – 2045 | 905.0 |  |  | 905.7 |
Tax-exempt Mortgage Note, due 2028 (1.31% floating rate) | 35.9 |  |  | 36.3 |
| 940.9 |  |  | 942.0 |
Total notes payable | $ | 2,589.9 |  |  | $ | 2,530.8 |
Other floating rate debt included in secured notes (0.93%) | $ | 175.0 |  |  | $ | 175.0 |
Scheduled Repayments On Outstanding Debt | Scheduled repayments on outstanding debt, including our unsecured line of credit, short-term borrowings and scheduled principal amortizations, and the respective weighted average interest rate on maturing debt at March 31, 2014 were as follows:
(in millions) | Amount |  | Weighted Average Interest Rate
2014 | $ | 34.5 |  |  | 3.2 | %
2015 | 312.0 |  |  | 4.2 |
2016 (1) | 2.2 |  |  | — |
2017 | 249.2 |  |  | 5.7 |
2018 | 177.6 |  |  | 0.9 |
Thereafter | 1,814.4 |  |  | 4.5 |
Total | $ | 2,589.9 |  |  | 4.3 | %
(1) Includes only scheduled principal amortizations.

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- Definition Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e),(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 7: 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 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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