Debt (Tables)

3 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Short-term Debt

Short-term Debt

(in millions, except weighted average amounts)	December 31, 2017			September 30, 2017
Short-term commercial paper borrowings outstanding (1)	$	728		$	330
Current portion of long-term debt	149			149
Short-term debt	$	877		$	479
Weighted average annualized interest rate of commercial paper borrowings	1.63		%	1.45		%
Weighted average maturity period of commercial paper borrowings (days)	11			18

⁽¹⁾ The maximum amount of short-term commercial paper borrowings outstanding during the three months ended December 31, 2017, was $879 million.

Principal Amount of Long-Term Debt, Net of Discount and Debt Issuance Costs

The principal amount of long-term debt, net of discount and debt issuance costs, is summarized as follows:

(in millions, except interest rate figures)	Interest Rate	December 31, 2017		September 30, 2017
Fixed-rate notes due:
July 2019	1.95%	$	300	$	300
July 2019	5.25%	300		300
November 2021	3.10%	250		250
March 2022	2.80%	1,100		1,100
December 2023	3.70%	400		400
March 2024	3.20%	950		950
March 2027	3.50%	1,300		1,300
December 2043	4.80%	400		400
April 2047	4.35%	1,000		1,000
Variable-rate term loan due:
April 2020	1 month LIBOR + 1.25%(1)	694		870
Fair value swap adjustment (see Notes 12 and 13)		9		14
Total		6,703		6,884
Less unamortized debt issuance costs and discounts		56		59
Less current portion of long-term debt		149		149
Long-term Debt, Net		$	6,498	$	6,676

⁽¹⁾ The Company has the option to elect a one, two, three or six-month LIBOR interest rate and has elected the one-month rate during the first quarter of 2018. The one-month LIBOR rate at December 31, 2017, was approximately 1.57 percent.