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Debt | 3 Months Ended
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Mar. 31, 2020
Debt Disclosure [Abstract] |
Debt | Debt Notes In March 2020, the Company’s $400 million 2.80% Senior Notes due March 2021 were classified as Short-term debt and current portion of long-term debt in the Condensed Consolidated Statements of Financial Position as the date of maturity is in less than one year. On November 15, 2019, Aon Corporation, a Delaware corporation and a wholly owned subsidiary of the Company, issued $500 million 2.20% Senior Notes due November 2022. The Company used the net proceeds of the offering to pay down a portion of outstanding commercial paper and for general corporate purposes. In September 2019, the Company’s $600 million 5.00% Senior Notes due September 2020 were classified as Short-term debt and current portion of long-term debt in the Condensed Consolidated Statements of Financial Position as the date of maturity is in less than one year. On May 2, 2019, Aon Corporation issued $750 million 3.75% Senior Notes due May 2029. The Company used the net proceeds of the offering to pay down a portion of outstanding commercial paper and for general corporate purposes. Revolving Credit Facilities As of March 31, 2020, Aon plc had two primary committed credit facilities outstanding: its $900 million multi-currency U.S. credit facility expiring in February 2022 and its $750 million multi-currency U.S. credit facility expiring in October 2023. Effective February 27, 2020, the $750 million multi-currency U.S. credit facility was increased by $350 million from the original $400 million. In aggregate, these two facilities provide $1.65 billion in available credit. Each of these primary committed credit facilities includes customary representations, warranties, and covenants, including financial covenants that require Aon to maintain specified ratios of adjusted consolidated earnings before interest, taxes, depreciation, and amortization (“EBITDA”) to consolidated interest expense and consolidated debt to adjusted consolidated EBITDA, in each case, tested quarterly. At March 31, 2020, Aon did not have borrowings under either of these primary committed credit facilities, and was in compliance with the financial covenants and all other covenants contained therein during the rolling 12 months ended March 31, 2020. Commercial Paper Aon Corporation has established a U.S. commercial paper program (the “U.S. Program”) and Aon UK has established a European multi-currency commercial paper program (the “European Program” and, together with the U.S. Program, the “Commercial Paper Programs”). Commercial paper may be issued in aggregate principal amounts of up to $600 million under the U.S. Program and €525 million under the European Program, not to exceed the amount of the Company’s committed credit, which was $1.65 billion at March 31, 2020. As of March 31, 2020, the U.S. Program was fully and unconditionally guaranteed by Aon UK and the European Program was fully and unconditionally guaranteed by Aon Corporation. In connection with the Ireland Reorganization, on April 1, 2020, a new guarantee structure for the Commercial Paper Programs was established. Refer to Note 18 “Guarantee of Registered Securities” for further information. Commercial paper outstanding, which is included in Short-term debt and current portion of long-term debt in the Condensed Consolidated Statements of Financial Position, is as follows (in millions):
As of |  | March 31, 2020 |  | December 31, 2019
Commercial paper outstanding |  | $ | 833 |  |  | $ | 112 |
The weighted average commercial paper outstanding and its related interest rates are as follows (in millions, except percentages):
|  | Three Months Ended March 31,
|  | 2020 |  | 2019
Weighted average commercial paper outstanding |  | $ | 456 |  |  | $ | 323 |
Weighted average interest rate of commercial paper outstanding |  | 0.96 | % |  | 0.49 | %

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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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