Debt (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Commercial Paper and Borrowings Under Bank Credit Facilities

Commercial Paper and Borrowings Under Bank Credit Facilities ($ in millions)

	December 31
	2016			2015
Balance	$	3.8		$	7.4
Weighted average interest rate	1.02		%	1.22		%

Outstanding balances of debt obligations and the applicable interest rates

utstanding balances of our debt obligations and the applicable interest rates as of December 31 ($ in millions):

	Date of Issue	Final Maturity	Interest Rate		2016		2015
Recourse Fixed Rate Debt
Unsecured	03/04/14	03/04/17	1.25	%	$	300.0	$	300.0
Unsecured	02/06/08	02/15/18	6.00	%	200.0		200.0
Unsecured	03/19/13	07/30/18	2.38	%	250.0		250.0
Unsecured (1)	12/27/10	10/31/18	3.84	%	10.5		10.9
Unsecured (1)	11/29/10	11/30/18	3.70	%	5.3		8.1
Unsecured	01/30/15	12/31/18	1.20	%	52.6		54.3
Unsecured	11/19/13	03/15/19	2.50	%	300.0		300.0
Unsecured	03/04/14	07/30/19	2.50	%	250.0		250.0
Unsecured	10/31/14	03/30/20	2.60	%	250.0		250.0
Unsecured	02/06/15	03/30/20	2.60	%	100.0		100.0
Unsecured	05/27/11	06/01/21	4.85	%	250.0		250.0
Unsecured	09/20/11	06/01/21	4.85	%	50.0		50.0
Unsecured	06/11/12	06/15/22	4.75	%	250.0		250.0
Unsecured	03/19/13	03/30/23	3.90	%	250.0		250.0
Unsecured	02/06/15	03/30/25	3.25	%	300.0		300.0
Unsecured	09/13/16	09/15/26	3.25	%	350.0		—
Unsecured	03/04/14	03/15/44	5.20	%	300.0		300.0
Unsecured	02/06/15	03/30/45	4.50	%	250.0		250.0
Unsecured	05/16/16	05/30/66	5.63	%	150.0		—
Unsecured	03/03/06	03/01/16	5.80	%	—		200.0
Unsecured	11/19/10	07/15/16	3.50	%	—		250.0
Unsecured	09/20/11	07/15/16	3.50	%	—		100.0
Total recourse fixed rate debt					$	3,868.4	$	3,923.3
Recourse Floating Rate Debt
Unsecured	03/02/16	03/02/21	2.18	%	$	200.0	$	—
Unsecured	12/20/16	12/20/21	0.85	%	57.8		—
Unsecured	08/28/14	08/28/24	2.24	%	100.0		100.0
Unsecured	09/23/15	09/23/25	2.25	%	60.0		60.0

	Date of Issue	Final Maturity	Interest Rate		2016			2015
Unsecured (2) (3)	12/21/12	12/21/17	1.76	%	—			100.0
Unsecured (2) (3)	01/22/13	12/21/17	1.76	%	—			10.0
Unsecured (3)	09/02/11	08/31/16	0.79	%	—			5.2
Total recourse floating rate debt					$	417.8		$	275.2
Nonrecourse Fixed Rate Debt
Secured	09/30/97	09/20/16	6.69	%	$	—		$	6.9
Total nonrecourse fixed rate debt					$	—		$	6.9
Total debt principal					$	4,286.2		$	4,205.4
Unamortized debt discount and debt issuance costs					(33.6		)	(28.5		)
Debt adjustment for fair value hedges					0.6			1.5
Total Debt					$	4,253.2		$	4,178.4

Maturities of GATX's debt obligation

The following table shows the scheduled principal payments of our debt obligations as of December 31, 2016 (in millions):

2017	$	302.6
2018	515.7
2019	550.0
2020	350.0
2021	557.8
Thereafter	2,010.1
Total debt principal	$	4,286.2