Debt

Our long-term debt (net of unamortized discount and issuance costs) consists of:



(Principal and carrying amounts in millions)	April 30, 2018		October 31, 2018
2.25% senior notes, $250 principal amount, due January 15, 2023	$	248	$	248
3.50% senior notes, $300 principal amount, due April 15, 2025	296		296
1.20% senior notes, €300 principal amount, due July 7, 2026	361		338
2.60% senior notes, £300 principal amount, due July 7, 2028	408		377
4.00% senior notes, $300 principal amount, due April 15, 2038	293		293
3.75% senior notes, $250 principal amount, due January 15, 2043	248		248
4.50% senior notes, $500 principal amount, due July 15, 2045	487		488
	$	2,341	$	2,288

As of April 30, 2018, our short-term borrowings consisted of $215 million of commercial paper, with an average interest rate of 2.04%, and an average remaining maturity of 23 days. As of October 31, 2018, our short-term borrowings of $258 million included $257 million of commercial paper, with an average interest rate of 2.37%, and an average remaining maturity of 21 days.