Long-Term Debt.



December 31,	2017			2016
6.50% Bonds, due 2018	$	—		$	250
6.75% Notes, due 2018	—			750
5.72% Notes, due 2019	500			750
1.63% Convertible Notes, due 2019*	403			403
6.150% Notes, due 2020	1,000			1,000
5.40% Notes, due 2021	1,250			1,250
5.87% Notes, due 2022	627			627
5.125% Notes, due 2024	1,250			1,250
5.90% Notes, due 2027	625			625
6.75% Bonds, due 2028	300			300
5.95% Notes due 2037	625			625
Iowa Finance Authority Loan, due 2042 (4.75%)	250			250
Other**	(23		)	(32		)
	6,807			8,048
Less: amount due within one year	1			4
	$	6,806		$	8,044


*	Amount was assumed in conjunction with the acquisition of RTI (see Note F).

Other includes various financing arrangements related to subsidiaries, unamortized debt discounts related to the outstanding notes and bonds listed in the table above, an equity option related to the convertible notes due in 2019 (see Note F), adjustments to the carrying value of long-term debt related to an interest swap contract accounted for as a fair value hedge that was unwound during 2017, and unamortized debt issuance costs.