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Debt Commitments | 12 Months Ended
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Dec. 31, 2019
Debt Disclosure [Abstract] |
Debt Commitments | Note 9. Debt Commitments Credit Facility, Notes Payable, and Commitments Debt obligations and letters of credit outstanding at year end consisted of the following:
| 2019 |  | 2018
Outstanding loans under unsecured revolving credit facility | $ | 210.0 |  |  | 365.0 |
2.00% Senior unsecured promissory note payable | 40.0 |  |  | 40.0 |
2.45% Senior unsecured promissory note payable | 35.0 |  |  | 35.0 |
3.22% Senior unsecured promissory note payable | 60.0 |  |  | 60.0 |
Total debt | 345.0 |  |  | 500.0 |
Less: Current portion of debt | (3.0 | ) |  | (3.0 | )
Long-term debt | $ | 342.0 |  |  | 497.0 |
Outstanding letters of credit under unsecured revolving credit facility - contingent obligation | $ | 36.3 |  |  | 36.3 |
Unsecured Revolving Credit Facility We have a $700.0 committed unsecured revolving credit facility ('Credit Facility'). The Credit Facility includes a committed letter of credit subfacility of $55.0. The commitments under the Credit Facility will expire (and any borrowings outstanding under the Credit Facility will become due and payable) on November 30, 2023. In the next twelve months, we have the ability and intent to repay a portion of the outstanding loans using cash; therefore, we have classified this portion as a current liability. The Credit Facility contains certain financial and other covenants, and our right to borrow under the Credit Facility is conditioned upon, among other things, our compliance with these covenants. We are currently in compliance with these covenants. Borrowings under the Credit Facility generally bear interest at a rate per annum equal to the London Interbank Offered Rate ('LIBOR') for interest periods of various lengths selected by us, plus 0.95%. Based on the interest periods we have chosen, our weighted per annum interest rate at December 31, 2019 was approximately 2.7%. We pay a commitment fee for the unused portion of the Credit Facility. This fee is either 0.10% or 0.125% per annum based on our usage of the Credit Facility. Senior Unsecured Promissory Notes Payable We have issued senior unsecured promissory notes under our master note agreement (the 'Master Note Agreement') in the aggregate principal amount of $135.0. Our aggregate borrowing capacity under the Master Note Agreement is $600.0; however, none of the institutional investors party to that agreement are committed to purchase notes thereunder. The notes currently issued under our Master Note Agreement consist of three series. The first is in an aggregate principal amount of $40.0, bears interest at a fixed rate of 2.00% per annum, and is due and payable on July 20, 2021. The second is in an aggregate principal amount of $35.0, bears interest at a fixed rate of 2.45% per annum, and is due and payable on July 20, 2022. The third is in an aggregate principal amount of $60.0, bears interest at a fixed rate of 3.22% per annum, and is due and payable on March 1, 2024. There is no amortization of these notes prior to their maturity date and interest is payable quarterly.

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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