Short-term Debt	6 Months Ended
Mar. 31, 2018
Short-term Debt [Abstract]
Short-term Debt	Short-term Debt Our short-term debt obligations primarily consist of commercial paper borrowings. Commercial paper borrowings outstanding were $308.0 million and $350.0 million at March 31, 2018, and September 30, 2017, respectively. The weighted average interest rate of the commercial paper outstanding was 2.00 percent and 1.26 percent at March 31, 2018, and September 30, 2017, respectively. In December 2017, we repaid our $250.0 million 5.65% notes which were classified as the current portion of long-term debt at September 30, 2017.

Short-term Debt

6 Months Ended

Mar. 31, 2018

Our short-term debt obligations primarily consist of commercial paper borrowings. Commercial paper borrowings outstanding were $308.0 million and $350.0 million at March 31, 2018, and September 30, 2017, respectively. The weighted average interest rate of the commercial paper outstanding was 2.00 percent and 1.26 percent at March 31, 2018, and September 30, 2017, respectively.

In December 2017, we repaid our $250.0 million 5.65% notes which were classified as the current portion of long-term debt at September 30, 2017.