DEBT

Debt consisted of the following:



		September 30, 2018		December 31, 2017
Fixed-rate notes due:	Interest rate:
May 2020	2.875%	$	2,000	$	—
May 2021	3.000%	2,000		—
July 2021	3.875%	500		500
November 2022	2.250%	1,000		1,000
May 2023	3.375%	750		—
August 2023	1.875%	500		500
November 2024	2.375%	500		500
May 2025	3.500%	750		—
August 2026	2.125%	500		500
November 2027	2.625%	500		500
May 2028	3.750%	1,000		—
November 2042	3.600%	500		500
Floating-rate notes due:
May 2020	3-month LIBOR + 0.29%	500		—
May 2021	3-month LIBOR + 0.38%	500		—
Commercial paper	2.114%	1,672		—
Other	Various	19		32
Total debt principal		13,191		4,032
Less unamortized debt issuance costs and discounts		110		50
Total debt		13,081		3,982
Less current portion		1,678		2
Long-term debt		$	11,403	$	3,980

In April 2018, we borrowed $7.5 billion under a short-term credit facility to finance, in part, the acquisition of CSRA. In May 2018, we issued $7.5 billion of fixed- and floating-rate notes to repay the borrowings under this facility. We entered into interest rate swap contracts that exchange the floating interest rates on the $500 notes due in May 2020 and May 2021 for fixed rates. The result of the interest rate swap contracts is effective interest rates on the floating-rate notes that are the same as the rates on the fixed-rate notes due in May 2020 and May 2021. See Note L for further discussion of our derivative financial instruments.

Our fixed- and floating-rate notes are fully and unconditionally guaranteed by several of our 100%-owned subsidiaries. See Note P for condensed consolidating financial statements. We have the option to redeem the fixed-rate notes prior to their maturity in whole or in part for the principal plus any accrued but unpaid interest and applicable make-whole amounts.

The aggregate amounts of scheduled principal maturities of our debt in the remainder of 2018 and in subsequent years are as follows:



2018	$	1,678
2019	2
2020	2,502
2021	3,002
2022	1,002
Thereafter	5,005
Total debt principal	$	13,191

On September 30, 2018, we had $1.7 billion of commercial paper outstanding with a dollar-weighted average interest rate of 2.114%. We have $5 billion in committed bank credit facilities for general corporate purposes and working capital needs and to support our commercial paper issuances. These credit facilities include a $2 billion 364-day facility expiring in March 2019, a $1 billion multi-year facility expiring in November 2020 and a $2 billion multi-year facility expiring in March 2023. We may renew or replace these credit facilities in whole or in part at or prior to their expiration dates. Our credit facilities are guaranteed by several of our 100%-owned subsidiaries. We also have an effective shelf registration on file with the Securities and Exchange Commission that allows us to access the debt markets.

Our financing arrangements contain a number of customary covenants and restrictions. We were in compliance with all covenants and restrictions on September 30, 2018.