Debt

9 Months Ended

Sep. 30, 2019

Our total debt, including short-term and long-term debt, consisted of the following as of September 30, 2019 and December 31, 2018 (in millions):



	As of September 30, 2019		As of December 31, 2018
Debt:
Short-term debt:
Commercial Paper	$	1,318	$	951
Other short-term debt	11		—
Total short-term debt	1,329		951
Long-term debt:
2020 Senior Notes (2.75% senior unsecured notes due December 1, 2020)	1,247		1,246
2022 Senior Notes (2.35% senior unsecured notes due September 15, 2022)	497		496
2023 Senior Notes (3.45% senior unsecured notes due September 21, 2023)	397		397
2023 Senior Notes (4.00% senior unsecured notes due October 15, 2023)	794		793
2025 Senior Notes (3.75% senior unsecured notes due December 1, 2025)	1,244		1,243
2027 Senior Notes (3.10% senior unsecured notes due September 15, 2027)	496		496
2028 Senior Notes (3.75% senior unsecured notes due September 21, 2028)	592		591
2048 Senior Notes (4.25% senior unsecured notes due September 21, 2048)	1,229		1,228
Total long-term debt	6,496		6,490
Total debt	$	7,825	$	7,441

Credit Facilities

We have a $3.4 billion senior unsecured revolving credit facility, or the Credit Facility, with a maturity date of August 9, 2023. The Credit Facility includes an option for us to propose an increase in the aggregate amount available for borrowing by up to $975 million, subject to the consent of the lenders funding the increase and certain other conditions. No amounts were outstanding under the Credit Facility as of September 30, 2019.

As of September 30, 2019, of the $3.4 billion that is currently available for borrowing under the Credit Facility, $1.3 billion is required to back-stop the amount outstanding under our U.S. dollar commercial paper program, or the Commercial Paper Program, and $160 million is required to support certain broker-dealer subsidiary commitments. The amount required to back-stop the amounts outstanding under the Commercial Paper Program will fluctuate as we increase or decrease our commercial paper borrowings. The remaining $1.9 billion is available for working capital and general corporate purposes including, but not limited to, acting as a back-stop to future increases in the amounts outstanding under the Commercial Paper Program.

During the nine months ended September 30, 2019, a subsidiary of ours entered into a new $20 million line of credit for their general corporate purposes. As of September 30, 2019, the subsidiary had borrowed $11 million, which is reflected as “other short-term debt” in the table above.

Commercial Paper Program

Our Commercial Paper Program is currently backed by the borrowing capacity available under the Credit Facility, as described above. The effective interest rate of commercial paper issuances does not materially differ from short-term interest rates (such as USD LIBOR) which fluctuate due to market conditions and as a result may impact our interest expense. During the nine months ended September 30, 2019, we had net issuances of $367 million under the Commercial Paper Program, the proceeds of which were used to fund the acquisition of Simplifile and for general corporate purposes.

Commercial paper notes of $1.3 billion with original maturities ranging from one to 77 days were outstanding as of September 30, 2019 under our Commercial Paper Program, with a weighted average interest rate of 2.2% per annum and a weighted average maturity of 27 days.