Annual percentage of required principal payment on the term loan facility in year 3.

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Annual percentage of required principal payment on the term loan facility in years 1 and 2.

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No definition available.

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Annual percentage of required principal payment on the term loan facility in years 4 and 5.

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Amount of cash and debt transferred by the acquirer as part of consideration transferred in a business combination.

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No definition available.

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The cash portion of the cash and debt instruments provided by Spinco as part of the acquisition.

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No definition available.

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The aggregate value of the cash and debt instruments from Spinco provided prior to close as part of the acquisition.

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The one-time costs associated with the change in control mandatory acceleration of expenses under the non-qualified pension plan expected to result from the consummation of the transaction.

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No definition available.

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The amount of the delayed-draw term loan facility drawn upon as of the Closing Date of the Transactions.

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No definition available.

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Maximum borrowing capacity under the delayed-draw term loan facility, which is included in the senior credit facility.

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No definition available.

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The maximum amount of delayed-draw term loan facility available to Spinco to finance the cash portion of the cash and debt instruments to be provided as part of the acquisition.

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No definition available.

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The amount of the delayed-draw term loan facility of Spinco drawn upon as of the Closing Date of the Transactions.

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No definition available.

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The one-time costs expected for advisory, legal, accounting, integration and other professional fees in connection with the Merger and related transactions.

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No definition available.

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The one-time costs expected for financing fees in connection with the Merger and related transactions.

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No definition available.

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The amount of upfront payments made upon the closing of the Transactions in order to receive ethylene at producer economics and for certain reservation fees for obtaining additional future ethylene supply at producer economics.

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No definition available.

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Payments, subject to certain post-closing adjustments, to be made as a result of the Transactions related to certain liabilities.

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No definition available.

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Represents the percentage of outstanding Olin common stock acquired by third party on the Closing Date of the Transactions.

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Represents percentage of outstanding Olin common stock retained by existing shareholders on the Closing Date of the Transactions.

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No definition available.

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Senior credit facility consisting of a senior revolving credit facility and a delayed-draw term loan facility.

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No definition available.

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Amount of borrowing capacity under a subfacility of the senior revolving credit facility.

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Term credit facility with a syndicate of lenders and Sumitomo Mitsui Banking Corporation under which Olin obtained term loans that were borrowed upon on the Closing Date of the Transactions.

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No definition available.

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Amendment to the term credit facility with a syndicate of lenders and Sumitomo Mitsui Banking Corporation which upon effectiveness will increase the aggregate amount of term loans available.

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No definition available.

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Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

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Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.

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Number of shares of equity interests issued or issuable to acquire entity.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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SUBSEQUENT EVENT (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
	Oct. 05, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Nov. 03, 2015	Oct. 01, 2015	Jun. 23, 2015	Dec. 31, 2014	Jun. 24, 2014
Debt Instrument [Line Items]
Notes Payable		$ 670.2	$ 689.1	$ 670.2	$ 689.1				$ 675.1
Common stock, authorized		120.0	120.0	120.0	120.0				120.0
Delayed-Draw Term Loan Facility of Spinco								$ 1,050.0
Senior Credit Facility								1,850.0
Line of Credit Facility, Maximum Borrowing Capacity								500.0		$ 265.0
Delayed-Draw Term Loan Facility, Maximum Borrowing Capacity								1,350.0
Subfacility Of Senior Credit Facility								$ 100.0
Annual Required Principal Payment (Percent) in Years 1 and 2								5.00%
Annual Required Principal Payment (Percent) in Year 3								7.50%
Annual Required Principal Payment (Percent) in Years 4 and 5								10.00%
Payments of Debt Issuance Costs				$ 19.7	$ 1.2
Expected Advisory, Legal, Accounting, Integration and Other Professional Fees				65.0
Change in Control Mandatory Acceleration of Expenses Under the Non-Qualified Pension Plan				45.0
Expected Financing Fees				30.0
Acquisition-related costs		$ 14.5	$ 1.0	35.4	$ 1.4
Amortization of Financing Costs		$ 7.7		$ 19.7
Subsequent Event [Member]
Debt Instrument [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	87.5
Percentage of Outstanding Common Stock Acquired by Third Party	53.00%
Percentage of Outstanding Common Stock Retained by Existing Stockholders	47.00%
Business Combination, Consideration Transferred	$ 5,069.8
Business Combination, Cash and Debt Transferred	2,568.4
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	1,527.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities	418.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	$ 556.0
Business Acquisition, Share Price	$ 17.46
Cash and Debt Distribution from Spinco	$ 2,095.0
Cash Portion of Cash and Debt Distribution	875.0
Payments of Certain Liabilities	39.9
Payments for Supply of Ethylene	433.5
Delayed-Draw Term Loan Facility of Spinco, Amount Drawn	875.0
Delayed-Draw Term Loan Facility, Amount Drawn	475.0
Sumitomo Credit Facility	600.0
Sumitomo Credit Facility Amendment						$ 200.0
Common stock, authorized							240.0
Subsequent Event [Member] \| 2023 Notes
Debt Instrument [Line Items]
Notes Payable	$ 720.0
Debt Instrument, Interest Rate, Stated Percentage	9.75%
Subsequent Event [Member] \| 2025 Notes
Debt Instrument [Line Items]
Notes Payable	$ 500.0
Debt Instrument, Interest Rate, Stated Percentage	10.00%