Long-Term Debt

Long-term debt consisted of the following (in millions):



	March 31, 2016							December 31, 2015
	Principal		Debt Issue Costs			Carrying Value		Principal		Debt Issue Costs			Carrying Value
Direct Senior Obligations of AFG:
9-7/8% Senior Notes due June 2019	$	350	$	(1	)	$	349	$	350	$	(1	)	$	349
6-3/8% Senior Notes due June 2042	230		(7		)	223		230		(7		)	223
5-3/4% Senior Notes due August 2042	125		(4		)	121		125		(4		)	121
Other	3		—			3		3		—			3
	708		(12		)	696		708		(12		)	696

Direct Subordinated Obligations of AFG:
6-1/4% Subordinated Debentures due September 2054	150		(5		)	145		150		(5		)	145
6% Subordinated Debentures due November 2055	150		(5		)	145		150		(5		)	145
	300		(10		)	290		300		(10		)	290

Subsidiaries:
National Interstate bank credit facility	12		—			12		12		—			12
	$	1,020	$	(22	)	$	998	$	1,020	$	(22	)	$	998

To achieve a desired balance between fixed and variable rate debt, AFG entered into an interest rate swap in June 2015, which effectively converts its 9-7/8% Senior Notes to a floating rate of three-month LIBOR plus 8.099% (8.7329% at March 31, 2016 and 8.6110% at December 31, 2015). The fair value of the interest rate swap (asset of $8 million and $2 million at March 31, 2016 and December 31, 2015, respectively) and the offsetting adjustment to the carrying value of the notes are both included in the carrying value of the 9-7/8% Senior Notes in the table above.

Scheduled principal payments on debt for the balance of 2016, the subsequent five years and thereafter were as follows:

2016 — none; 2017 — $12 million; 2018 — none; 2019 — $350 million; 2020 — none; 2021 — none and thereafter — $658 million.

As shown below (principal amount, in millions), the majority of AFG’s long-term debt is unsecured obligations of the holding company and its subsidiaries:



	March 31, 2016		December 31, 2015
Senior unsecured obligations	$	720	$	720
Subordinated unsecured obligations	300		300
	$	1,020	$	1,020

AFG can borrow up to $500 million under its revolving credit facility which expires in December 2016. Amounts borrowed under this agreement bear interest at rates ranging from 1.00% to 1.875% (currently 1.375%) over LIBOR based on AFG’s credit rating. No amounts were borrowed under this facility at March 31, 2016 or December 31, 2015.

National Interstate can borrow up to $100 million under its unsecured credit agreement, which expires in November 2017. At March 31, 2016, there was $12 million outstanding under this agreement, bearing interest at 1.399% (six-month LIBOR plus 0.875%).