DEBT (Tables)

12 Months Ended

Dec. 31, 2015

Debt Instruments [Abstract]

Schedule of long-term debt

	December 31,
	2015		2014
Notes payable:	($ in millions)
Variable-rate Senior Term Loan facility, due 2020 (2.17% at December 31, 2015)	$	1,350.0	$	—
Variable-rate Sumitomo credit facility, due 2018 (1.77% at December 31, 2015)	800.0		—
Variable-rate Recovery Zone bonds, due 2024-2035 (1.40% and 1.31% at December 31, 2015 and 2014, respectively)	103.0		103.0
Variable-rate Go Zone bonds, due 2024 (1.40% and 1.31% at December 31, 2015 and 2014, respectively)	50.0		50.0
Variable-rate Industrial development and environmental improvement obligations, due 2025 (0.27% and 0.20% at December 31, 2015 and 2014, respectively)	2.9		2.9
Variable-rate Senior Term Loan facility, due 2019 (1.66% at December 31, 2014)	—		149.1
9.75%, due 2023	720.0		—
10.00%, due 2025	500.0		—
5.50%, due 2022	200.0		200.0
6.75%, due 2016 (includes interest rate swaps of $1.2 million and $3.7 million in 2015 and 2014, respectively)	126.2		128.7
7.23%, SunBelt Notes due 2013-2017 (includes unamortized fair value premium of $0.2 million and $0.5 million and interest rate swaps of $0.4 million and $0.8 million in 2015 and 2014, respectively)	25.0		37.8
Capital lease obligations	4.6		3.6
Total debt	3,881.7		675.1
Amounts due within one year	206.5		16.4
Total long-term debt	$	3,675.2	$	658.7

Swap activity related to certain debt obligations

The following table reflects the swap activity related to certain debt obligations:

Underlying Debt Instrument	Swap Amount		Date of Swap	December 31, 2015
	($ in millions)			Olin Pays Floating Rate:
6.75%, due 2016	$	65.0	March 2010	3.75 - 4.75%	(a)
6.75%, due 2016	$	60.0	March 2010	3.75 - 4.75%	(a)
				Olin Receives Floating Rate:
6.75%, due 2016	$	65.0	October 2011	3.75 - 4.75%	(a)
6.75%, due 2016	$	60.0	October 2011	3.75 - 4.75%	(a)

(a) Actual rate is set in arrears.  We project the rate will fall within the range shown.