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Short-Term Borrowings | 3 Months Ended
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Mar. 31, 2017
Short-term Debt [Abstract] |
Short-Term Borrowings | Short-Term Borrowings NiSource generates short-term borrowings from its revolving credit facility, commercial paper program, letter of credit issuances and accounts receivable transfer programs. Each of these borrowing sources is described further below. NiSource Finance maintains a revolving credit facility to fund ongoing working capital requirements including the provision of liquidity support for its $1.5 billion commercial paper program, provide for issuance of letters of credit and also for general corporate purposes. NiSource Finance's revolving credit facility has a program limit of $1.85 billion and is comprised of a syndicate of banks led by Barclays Bank. At March 31, 2017 and December 31, 2016, NiSource had no outstanding borrowings under this facility. NiSource Finance's commercial paper program has a program limit of up to $1.5 billion with a dealer group comprised of Barclays, Citigroup, Credit Suisse and Wells Fargo. As of March 31, 2017 and December 31, 2016, NiSource had commercial paper outstanding of $1,075.2 million and $1,178.0 million, respectively. As of March 31, 2017 and December 31, 2016, NiSource had $14.7 million of stand-by letters of credit outstanding, all of which were under the revolving credit facility. Transfers of accounts receivable are accounted for as secured borrowings resulting in the recognition of short-term borrowings on the Condensed Consolidated Balance Sheets (unaudited) in the amount of $439.0 million and $310.0 million as of March 31, 2017 and December 31, 2016, respectively. Refer to Note 8, "Transfers of Financial Assets," for additional information. Short-term borrowings were as follows:
(in millions) | March 31, 2017 |  | December 31, 2016
Commercial Paper weighted-average interest rate of 1.37% and 1.24% at March 31, 2017 and December 31, 2016, respectively | $ | 1,075.2 |  |  | $ | 1,178.0 |
Accounts receivable securitization facility borrowings | 439.0 |  |  | 310.0 |
Total Short-Term Borrowings | $ | 1,514.2 |  |  | $ | 1,488.0 |
Given their maturities are less than 90 days, cash flows related to the borrowings and repayments of the items listed above are presented net in the Condensed Statements of Consolidated Cash Flows (unaudited).

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- Definition The entire disclosure for short-term debt. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 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 210.9-03.13) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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