Sisecam Resources (SIRE) 10-Q 7 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	1-May-15
Document Information [Line Items]
Entity Registrant Name	OCI Resources LP.
Entity Central Index Key	1575051
Current Fiscal Year End Date	-19
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Amendment Flag	FALSE
Common Unitholders
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		9,820,438
Subordinated Units
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		9,775,500
General Partner
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		399,000

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Current assets:
Cash and cash equivalents	$36.40	$31
Accounts receivable, net	31.4	35.5
Accounts receivable - ANSAC	65.1	70.4
Due from affiliates, net	19.5	19.6
Inventory	49.3	43.2
Other current assets	1.3	1.8
Total current assets	203	201.5
Property, plant and equipment, net	244.2	245
Other non-current assets	0.8	0.9
Total assets	448	447.4
Current liabilities:
Accounts payable	13.8	13.1
Due to affiliates	4.6	7.1
Accrued expenses	28.7	29.5
Total current liabilities	47.1	49.7
Long-term debt	145	145
Other non-current liabilities	4.3	4.2
Total liabilities	196.4	198.9
Commitments and Contingencies (See Note 9)
Equity:
General partner unitholders - OCI Resource Partners LLC (0.4 million units issued and outstanding at March 31, 2015 and December 31, 2014, respectively)	3.9	3.8
Accumulated other comprehensive loss	-1.4	-0.4
Partners' capital attributable to OCI Resources LP	148.8	147.6
Non-controlling interest	102.8	100.9
Total equity	251.6	248.5
Total liabilities and partners' equity	448	447.4
Common Unitholders
Equity:
Common and subordinated unitholders	107.3	106.3
Subordinated Units
Equity:
Common and subordinated unitholders	$39	$37.90

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)	Mar. 31, 2015	Dec. 31, 2014
General Partners' Capital Account, Units Issued	399,000	399,000
General Partners' Capital Account, Units Outstanding	399,000	399,000
Common Unitholders
Common and subordinated units issued	9,802,139	9,801,830
Common and subordinated units outstanding	9,802,139	9,801,830
Subordinated Units
Common and subordinated units issued	9,775,500	9,775,500
Common and subordinated units outstanding	9,775,500	9,775,500

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME Statement (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Net sales	$120.40	$116.20
Cost of products sold	82.4	84
Selling, general and administrative expenses	4.9	4.2
Depreciation, depletion and amortization expense	5.6	5.4
Total operating costs and expenses	92.9	93.6
Operating income	27.5	22.6
Other income/(expenses):
Interest expense, net	-0.9	-1.2
Other, net	-0.1	0.2
Total other income/(expense), net	-1	-1
Net income	26.5	21.6
Net income attributable to non-controlling interest	13.7	11.3
Net income attributable to OCI Resources LP		10.3
Net income attributable to OCI Resources LP	12.8	10.3
Other comprehensive income/(loss):
Income/(loss) on derivative financial instruments	-2	-0.2
Comprehensive income	24.5	21.4
Comprehensive income attributable to non-controlling interest	12.7	11.2
Comprehensive income attributable to OCI Resources LP	$11.80	$10.20
Common unit
Other comprehensive income/(loss):
Net income per common and subordinated unit (basic and diluted) (dollars per share)	$0.64	$0.52
Weighted average common and subordinated units outstanding (basic and diluted) (shares)	9,787,434	9,775,500
Subordinated Units
Other comprehensive income/(loss):
Net income per common and subordinated unit (basic and diluted) (dollars per share)	$0.64	$0.52
Weighted average common and subordinated units outstanding (basic and diluted) (shares)	9,775,500	9,775,500

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$26.50	$21.60
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization expense	5.7	5.4
Equity-based compensation expense	0.1	0
Other Noncash Income (Expense)	0.2	0
Changes in operating assets and liabilities:
Accounts receivable, net	4.1	1.6
Accounts receivable - ANSAC	5.3	-5.2
Due from affiliates, net	0.1	-10.7
Inventory	-6	-0.6
Other current and other non-current assets	0.4	0.7
Increase/(decrease) in:
Accounts payable	2.9	-3.9
Due to affiliates	-2.4	4.9
Accrued expenses and other liabilities	-2.2	0.5
Net cash provided by operating activities	34.7	14.3
Cash flows from investing activities:
Capital expenditures	-7.8	-2.7
Net cash used in investing activities	-7.8	-2.7
Cash flows from financing activities:
Distributions	21.5	23.1
Distributions to non-controlling interest	-10.9	-11.7
Net cash used in financing activities	-21.5	-23.1
Net increase/(decrease) in cash and cash equivalents	5.4	-11.5
Cash and cash equivalents at beginning of period	31	46.9
Cash and cash equivalents at end of period	36.4	35.4
Common Units
Cash flows from financing activities:
Distributions	-5.2	-5.6
General Partner
Cash flows from financing activities:
Distributions	-0.2	-0.2
Subordinated Units
Cash flows from financing activities:
Distributions	($5.20)	($5.60)

CONSOLIDATED_STATEMENTS_OF_EQU

CONSOLIDATED STATEMENTS OF EQUITY Statement (USD $)	Total	Accumulated Other Comprehensive Loss	Partners' Capital Attributable to OCIR Equity	Non-controlling Interests	Common Units	Common Units	Subordinated Units	Subordinated Units	General Partner	General Partner
In Millions, unless otherwise specified						Partnership units		Partnership units		Partnership units
BALANCE, beginning of period at Dec. 31, 2013	$241.30	($0.30)	$144.60	$96.70		$104.50		$36.60		$3.80
Increase (decrease) in shareholders' equity
Net income	21.6		10.3	11.3		5.1		5		0.2
Distributions	-23.1		-11.4	-11.7	5.6	-5.6	5.6	-5.6	0.2	-0.2
Interest rate swap adjustments	-0.2		-0.1	-0.1		0		0		0
BALANCE, end of period at Mar. 31, 2014	239.6	-0.4	143.4	96.2		104		36		3.8
BALANCE, beginning of period at Dec. 31, 2014	248.5	-0.4	147.6	100.9		106.3		37.9		3.8
Increase (decrease) in shareholders' equity
Net income	26.5		12.8	13.7		6.3		6.3		0.2
Distributions	-21.5		-10.6	-10.9	5.2	-5.2	5.2	-5.2	0.2	-0.2
Interest rate swap adjustments	-2	-1	-1	-1
BALANCE, end of period at Mar. 31, 2015	$251.60	($1.40)	$148.80	$102.80		$107.30		$39		$3.90

CORPORATE_STRUCTURE_AND_SUMMAR

CORPORATE STRUCTURE AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Corporate Structure and Summary of Significant Accounting Policies	1. CORPORATE STRUCTURE AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Nature of Operations
	The unaudited condensed consolidated financial statements are composed of OCI Resources LP (the "Partnership," "OCI Resources," "OCIR," "we," "us," or "our"), a publicly traded Delaware limited partnership, and its consolidated subsidiary, OCI Wyoming LLC ("OCI Wyoming"), which is in the business of mining trona ore to produce soda ash. The Partnership's operations consist solely of its investment in OCI Wyoming. OCIR was formed in April 2013 by OCI Wyoming Holding Co. ("OCI Holdings"), a wholly-owned subsidiary of OCI Chemical Corporation ("OCI Chemical"). On September 18, 2013, the Partnership completed the initial public offering of its common units representing limited partner interests (the "Common Units"). The Partnership owns a controlling interest comprised of 51.0% membership interest in OCI Wyoming. All soda ash processed is sold to various domestic, Korean and European customers and to American Natural Soda Ash Corporation ("ANSAC") which is an affiliate for export. All mining and processing activities take place in one facility located in the Green River Basin of Wyoming.
	Basis of Presentation and Significant Accounting Policies
	The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles ("GAAP") applicable to interim period financial statements and reflect all adjustments, consisting of normal recurring accruals, which are necessary for fair presentation of the results of operations, financial position and cash flows for the periods presented. All significant intercompany transactions, balances, revenue and expenses have been eliminated in consolidation. The results of operations for the period ended March 31, 2015 are not necessarily indicative of the operating results for the full year.
	These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes to audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2014 (the "2014 Annual Report"). There has been no material change in the significant accounting policies followed by us during the three month periods ended March 31, 2015 from those disclosed in the 2014 Annual Report.
	Non-controlling interests
	NRP Trona LLC, a wholly-owned subsidiary of Natural Resource Partners L.P. ("NRP"), currently owns a 49.0% membership interest in OCI Wyoming.
	Use of Estimates
	The preparation of these unaudited condensed consolidated financial statements, in accordance with GAAP, requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the dates of the unaudited condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
	Subsequent Events
	We have evaluated subsequent events through the filing of this Quarterly Report on Form 10-Q.
	Recently Issued Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Topic 606) that requires companies to recognize revenue when a customer obtains control rather than when companies have transferred substantially all risks and rewards of a good or service. In April 2015, FASB made a decision to defer the effective date of the new revenue recognition standard by one year. As a result, public entities would apply the new revenue standard to annual reporting periods beginning after December 15, 2017 and interim periods therein and requires expanded disclosures. We are currently assessing the impact the adoption of ASU 2014-09 will have on our condensed consolidated financial statements.
	In June 2014, the FASB issued ASU No. 2014-12, Compensation – Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period. The new guidance requires that share-based compensation that require a specific performance target to be achieved in order for employees to become eligible to vest in the awards and that could be achieved after an employee completes the requisite service period be treated as a performance condition. As such, the performance target should not be reflected in estimating the grant-date fair value of the award. Compensation costs should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. If the performance target becomes probable of being achieved before the end of the requisite service period, the remaining unrecognized compensation cost should be recognized prospectively over the remaining requisite service period. The total amount of compensation cost recognized during and after the requisite service period should reflect the number of awards that are expected to vest and should be adjusted to reflect those awards that ultimately vest. The requisite service period ends when the employee can cease rendering service and still be eligible to vest in the award if the performance target is achieved. This new guidance is effective for fiscal years and interim periods within those years beginning after December 15, 2015. Early adoption is permitted. Entities may apply the amendments in this Update either (a) prospectively to all awards granted or modified after the effective date or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. The adoption of ASU 2014-12 has not had a material impact on our financial position or results of operations.

NET_INCOME_PER_UNIT_AND_CASH_D

NET INCOME PER UNIT AND CASH DISTRIBUTION	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
NET INCOME PER UNIT AND CASH DISTRIBUTION	NET INCOME PER UNIT AND CASH DISTRIBUTION
	Allocation of Net Income
	Net income per unit applicable to limited partners (including subordinated unitholders) is computed by dividing limited partners’ interest in net income attributable to OCI Resources LP, after deducting the general partner's interest and any incentive distributions, by the weighted average number of outstanding common and subordinated units. Our net income is allocated to the general partner and limited partners in accordance with their respective partnership percentages, after giving effect to priority income allocations for incentive distributions, if any, to our general partner, pursuant to our partnership agreement. Earnings in excess of distributions are allocated to the general partner and limited partners based on their respective ownership interests. Payments made to our unitholders are determined in relation to actual distributions declared and are not based on the net income allocations used in the calculation of net income per unit.
	In addition to the common and subordinated units, we have also identified the general partner interest and incentive distribution rights ("IDRs") as participating securities and use the two-class method when calculating the net income per unit applicable to limited partners, which is based on the weighted-average number of common units outstanding during the period. Basic and diluted net income per unit applicable to limited partners were the same as our potentially dilutive units outstanding were immaterial and we had no anti-dilutive units for the three months ended March 31, 2015. For the three months ended March 31, 2014, we did not have any potentially dilutive units outstanding.
	The net income attributable to common and subordinated unitholders and the weighted average units for calculating basic and diluted net income per common and subordinated units were as follows:
		Three Months Ended
		March 31,
	($ and unit data in millions, except per unit data)	2015				2014
	Net income attributable to OCI Resources LP	$	12.8			$	10.3
	Less: General partner's interest in net income	0.2				0.2
	Total limited partners' interest in net income	$	12.6			$	10.1
	Weighted average limited partner units outstanding:
	Common - Public and OCI Holdings (basic and diluted)	9.8				9.8
	Subordinated - OCI Holdings (basic and diluted)	9.8				9.8
	Total weighted average limited partner units outstanding	19.6				19.6
	Net income per limited partner unit:
	Common - Public and OCI Holdings (basic and diluted)	$	0.64			$	0.52
	Subordinated - OCI Holdings (basic and diluted)	$	0.64			$	0.52
	The calculation of limited partners' interest in net income is as follows:
		Three Months Ended
		March 31,
	($ in millions, except per unit data)	2015				2014
	Net income attributable to common unitholders:
	Distributions (a)	$	5.3			$	4.9
	Undistributed earnings	1				0.2
	Common unitholders' interest in net income	$	6.3			$	5.1
	Net income attributable to subordinated unitholders:
	Distributions (a)	$	5.3			$	4.8
	Undistributed earnings	1				0.2
	Subordinated unitholders' interest in net income	$	6.3			$	5
	(a) Distributions declared per unit for the period	$	0.538			$	0.5
	Quarterly Distribution
	On April 17, 2015, the Partnership declared its first quarter 2015 quarterly cash distribution of $0.5380 per unit. The quarterly cash distribution is payable on May 15, 2015 to unitholders of record on May 1, 2015.
	Our general partner has considerable discretion in determining the amount of available cash, the amount of distributions and the decision to make any distribution. Although our partnership agreement requires that we distribute all of our available cash quarterly, there is no guarantee that we will make quarterly cash distributions to our unitholders at our current quarterly distribution level, at the minimum quarterly distribution level or at any other rate, and we have no legal obligation to do so. However, our partnership agreement does contain provisions intended to motivate our general partner to make steady, increasing and sustainable distributions over time.
	Distributions from Operating Surplus During the Subordination Period
	If we make a distribution from operating surplus for any quarter during the subordination period, our partnership agreement requires that we make the distribution in the following manner:
	•	first, 98.0% to the common unitholders, pro rata, and 2.0% to our general partner, until we distribute for each common unit an amount equal to the minimum quarterly distribution for that quarter;
	•	second, 98.0% to the common unitholders, pro rata, and 2.0% to our general partner, until we distribute for each outstanding common unit an amount equal to any arrearages in the payment of the minimum quarterly distribution on the common units with respect to any prior quarters;
	•	third, 98.0% to the subordinated unitholders, pro rata, and 2.0% to our general partner, until we distribute for each subordinated unit an amount equal to the minimum quarterly distribution for that quarter; and
	•	thereafter, in the manner described in "General Partner Interest and Incentive Distribution Rights" below.
	General Partner Interest and Incentive Distribution Rights
	Our partnership agreement provides that our general partner initially will be entitled to 2.0% of all distributions that we make prior to our liquidation. Our general partner has the right, but not the obligation, to contribute up to a proportionate amount of capital to us in order to maintain its 2.0% general partner interest if we issue additional units. Our general partner's approximate 2.0% interest, and the percentage of our cash distributions to which our general partner is entitled from such approximate 2.0% interest, will be proportionately reduced if we issue additional units in the future (other than (1) the issuance of common units upon conversion of outstanding subordinated units or (2) the issuance of common units upon a reset of the IDRs), and our general partner does not contribute a proportionate amount of capital to us in order to maintain its approximate 2.0% general partner interest. Our partnership agreement does not require that our general partner fund its capital contribution with cash. It may, instead, fund its capital contribution by contributing to us common units or other property.
	IDRs represent the right to receive increasing percentages (13.0%, 23.0% and 48.0%) of quarterly distributions from operating surplus after we have achieved the minimum quarterly distribution and the target distribution levels. Our general partner currently holds the IDRs, but may transfer these rights separately from its general partner interest, subject to certain restrictions in our partnership agreement.
	Percentage Allocations of Distributions from Operating Surplus
	The following table illustrates the percentage allocations of distributions from operating surplus between the unitholders and our general partner based on the specified target distribution levels. The amounts set forth under the column heading "Marginal Percentage Interest in Distributions" are the percentage interests of our general partner and the unitholders in any distributions from operating surplus we distribute up to and including the corresponding amount in the column "Total Quarterly Distribution per Unit Target Amount." The percentage interests shown for our unitholders and our general partner for the minimum quarterly distribution also apply to quarterly distribution amounts that are less than the minimum quarterly distribution. The percentage interests set forth below for our general partner (1) include its 2.0% general partner interest, (2) assume that our general partner has contributed any additional capital necessary to maintain its 2.0% general partner interest, (3) assume that our general partner has not transferred its IDRs and (4) assume there are no arrearages on common units.
				Marginal Percentage
				Interest in
				Distributions
		Total Quarterly		Unitholders			General Partner
		Distribution per Unit
		Target Amount
	Minimum Quarterly Distribution	$0.50		98	%		2	%
	First Target Distribution	above $0.5000 up to $0.5750		98	%		2	%
	Second Target Distribution	above $0.5750 up to $0.6250		85	%		15	%
	Third Target Distribution	above $0.6250 up to $0.7500		75	%		25	%
	Thereafter	above $0.7500		50	%		50	%

INVENTORY

INVENTORY	3 Months Ended
	Mar. 31, 2015
Inventory Disclosure [Abstract]
INVENTORY	INVENTORY
	Inventory as of March 31, 2015 and December 31, 2014 consists of the following:
	($ in millions)	March 31,		December 31,
		2015		2014
	Raw materials	$	8.4	$	6.4
	Finished goods	13.1		10.4
	Stores inventory	27.8		26.4
	Total	$	49.3	$	43.2

DEBT

DEBT	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
DEBT	DEBT
	Long-term debt as of March 31, 2015 and December 31, 2014 consists of the following:
	($ in millions)	March 31,		December 31,
		2015		2014
	Variable Rate Demand Revenue Bonds, principal due October 1, 2018, interest payable monthly, bearing monthly interest rate of 0.12% at March 31, 2015 and 0.14% December 31, 2014	$	11.4	$	11.4
	Variable Rate Demand Revenue Bonds, principal due August 1, 2017, interest payable monthly, bearing monthly interest rate of 0.12% at March 31, 2015 and 0.14% December 31, 2014	8.6		8.6
	OCI Wyoming Credit Facility, unsecured principal expiring on July 18, 2018, interest payable quarterly, bearing quarterly variable interest at 2.00% at March 31, 2015 and 1.9781% at December 31, 2014	125		125
	Total debt	$	145	$	145
	Current portion of long-term debt	—		—
	Total long-term debt	$	145	$	145
	Aggregate maturities required on long-term debt at March 31, 2015 are due in future years as follows:
	($ in millions)	Amount
	2017	$	8.6
	2018	136.4
	Total	$	145
	Demand Revenue Bonds
	The above revenue bonds require OCI Wyoming to maintain standby letters of credit totaling $20.3 million at March 31, 2015 and December 31, 2014, respectively. These letters of credit require compliance with certain covenants, including minimum net worth, maximum debt to net worth, and interest coverage ratios. As of March 31, 2015 and December 31, 2014, OCI Wyoming was in compliance with these debt covenants.
	OCI Wyoming Credit Facility
	On July 18, 2013, OCI Wyoming entered into a $190.0 million senior unsecured revolving credit facility, as amended on October 30, 2014 (as amended, the "OCI Wyoming Credit Facility"), with a syndicate of lenders, which will mature on the fifth anniversary of the closing date of such credit facility. The OCI Wyoming Credit Facility provides for revolving loans to fund working capital requirements, capital expenditures, to consummate permitted acquisitions and for all other lawful partnership purposes. The OCI Wyoming Credit Facility has an accordion feature that allows OCI Wyoming to increase the available revolving borrowings under the facility by up to an additional $75.0 million, subject to OCI Wyoming receiving increased commitments from existing lenders or new commitments from new lenders and the satisfaction of certain other conditions. In addition, the OCI Wyoming Credit Facility includes a sublimit up to $20.0 million for same-day swing line advances and a sublimit up to $40.0 million for letters of credit. OCI Wyoming's obligations under the OCI Wyoming Credit Facility are unsecured.
	The OCI Wyoming Credit Facility contains various covenants and restrictive provisions that limit (subject to certain exceptions) OCI Wyoming's ability to:
	•	make distributions on or redeem or repurchase units;
	•	incur or guarantee additional debt;
	•	make certain investments and acquisitions;
	•	incur certain liens or permit them to exist;
	•	enter into certain types of transactions with affiliates of OCI Wyoming;
	•	merge or consolidate with another company; and
	•	transfer, sell or otherwise dispose of assets.
	The OCI Wyoming Credit Facility also requires quarterly maintenance of a consolidated leverage ratio (as defined in the OCI Wyoming Credit Facility) of not more than 3.00 to 1.00 and a consolidated fixed charge coverage ratio (as defined in the OCI Wyoming Credit Facility) of not less than 1.10 to 1.00 for the 2015 fiscal year and not less than 1.15 to 1.00 thereafter. The OCI Wyoming Credit Facility also requires that consolidated capital expenditures, as defined in the OCI Wyoming Credit Facility, not exceed $50 million in any fiscal year.
	In addition, the OCI Wyoming Credit Facility contains events of default customary for transactions of this nature, including (i) failure to make payments required under the OCI Wyoming Credit Facility, (ii) events of default resulting from failure to comply with covenants and financial ratios in the OCI Wyoming Credit Facility, (iii) the occurrence of a change of control, (iv) the institution of insolvency or similar proceedings against OCI Wyoming and (v) the occurrence of a default under any other material indebtedness OCI Wyoming may have. Upon the occurrence and during the continuation of an event of default, subject to the terms and conditions of the OCI Wyoming Credit Facility, the lenders may terminate all outstanding commitments under the OCI Wyoming Credit Facility and may declare any outstanding principal of the OCI Wyoming Credit Facility debt, together with accrued and unpaid interest, to be immediately due and payable.
	Under the OCI Wyoming Credit Facility, a change of control is triggered if OCI Chemical and its wholly-owned subsidiaries, directly or indirectly, cease to own all of the equity interests, or cease to have the ability to elect a majority of the board of directors (or similar governing body) of OCI GP (or any entity that performs the functions of our general partner). In addition, a change of control would be triggered if we cease to own at least 50.1% of the economic interests in OCI Wyoming or cease to have the ability to elect a majority of the members of OCI Wyoming's board of managers.
	OCI Wyoming was in compliance with all covenants and restrictions under its long-term debt agreements as of March 31, 2015.
	Loans under the OCI Wyoming Credit Facility bear interest at OCI Wyoming's option at either:
	•	a Base Rate, which equals the highest of (i) the federal funds rate in effect on such day plus 0.50%, (ii) the administrative agent's prime rate in effect on such day and (iii) one-month LIBOR plus 1.0%, in each case, plus an applicable margin; or
	•	a LIBOR Rate plus an applicable margin.
	The unused portion of the OCI Wyoming Credit Facility is subject to an unused line fee ranging from 0.275% to 0.350% per annum based on OCI Wyoming's then current consolidated leverage ratio.
	Revolving Credit Facility
	On July 18, 2013, we entered into a $10.0 million senior secured revolving credit facility, as amended on October 30, 2014 (as amended, the "Revolving Credit Facility"), with a syndicate of lenders, which will mature on the fifth anniversary of the closing date of such credit facility. The Revolving Credit Facility provides for revolving loans to be available to fund distributions on OCIR's units and working capital requirements and capital expenditures, to consummate permitted acquisitions and for all other lawful partnership purposes. At March 31, 2015, we had no outstanding borrowings under the Revolving Credit Facility. The Revolving Credit Facility includes a sublimit up to $5.0 million for same-day swing line advances and a sublimit up to $5.0 million for letters of credit. Our obligations under the Revolving Credit Facility are guaranteed by each of our material domestic subsidiaries other than OCI Wyoming, and to the extent no material adverse tax consequences would result, foreign wholly-owned subsidiaries. As of March 31, 2015, our only subsidiary was OCI Wyoming. In addition, our obligations under the Revolving Credit Facility are secured by a pledge of substantially all of our assets (subject to certain exceptions), including the partnership interests held in OCI Wyoming by us.
	The Revolving Credit Facility contains various covenants and restrictive provisions that limit (subject to certain exceptions) our ability to (and the ability of our subsidiaries, including without limitation, OCI Wyoming to):
	•	make distributions on or redeem or repurchase units;
	•	incur or guarantee additional debt;
	•	make certain investments and acquisitions;
	•	incur certain liens or permit them to exist;
	•	enter into certain types of transactions with affiliates;
	•	merge or consolidate with another company; and
	•	transfer, sell or otherwise dispose of assets.
	The Revolving Credit Facility also requires quarterly maintenance of a consolidated fixed charge coverage ratio (as defined in the Revolving Credit Facility) of not less than 1.05 to 1.00 for the 2015 fiscal year and not less than 1.10 to 1.00 thereafter. The Revolving Credit Facility also requires that consolidated capital expenditures, as defined in the Revolving Credit Facility, not exceed $50 million in any fiscal year.
	In addition, the Revolving Credit Facility contains events of default customary for transactions of this nature, including (i) failure to make payments required under the Revolving Credit Facility, (ii) events of default resulting from failure to comply with covenants and financial ratios, (iii) the occurrence of a change of control, (iv) the institution of insolvency or similar proceedings against us or our material subsidiaries and (v) the occurrence of a default under any other material indebtedness we (or any of our subsidiaries) may have, including the OCI Wyoming Credit Facility. Upon the occurrence and during the continuation of an event of default, subject to the terms and conditions of the Revolving Credit Facility, the lenders may terminate all outstanding commitments under the Revolving Credit Facility and may declare any outstanding principal of the Revolving Credit Facility debt, together with accrued and unpaid interest, to be immediately due and payable.
	Under the Revolving Credit Facility, a change of control is triggered if OCI Chemical and its wholly-owned subsidiaries, directly or indirectly, cease to own all of the equity interests, or cease to have the ability to elect a majority of the board of directors (or similar governing body) of, OCI Holdings or OCI GP (or any entity that performs the functions of our general partner). In addition, a change of control would be triggered if we cease to own at least 50.1% of the economic interests in OCI Wyoming or ceases to have the ability to elect a majority of the members of OCI Wyoming's board of managers.
	The Partnership was in compliance with all covenants and restrictions under its long-term debt agreements as of March 31, 2015.
	Loans under the Revolving Credit Facility bear interest at our option at either:
	•	a Base Rate, which equals the highest of (i) the federal funds rate in effect on such day plus 0.50%, (ii) the administrative agent's prime rate in effect on such day and (iii) one-month LIBOR plus 1.0%, in each case, plus an applicable margin; or
	•	a LIBOR Rate plus an applicable margin.
	The unused portion of the Revolving Credit Facility is subject to an unused line fee ranging from 0.275% to 0.350% based on our then current consolidated leverage ratio.

OTHER_NONCURRENT_LIABILITIES_N

OTHER NON-CURRENT LIABILITIES (Notes)	3 Months Ended
	Mar. 31, 2015
Asset Retirement Obligation Disclosure [Abstract]
Other non-current liabilities	OTHER NON-CURRENT LIABILITIES
	Other non-current liabilities as of March 31, 2015 and December 31, 2014 was comprised as follows:
	($ in millions)	March 31,		December 31,
		2015		2014
	Reclamation reserve balance at beginning of year	$	4.2	$	3.8
	Accretion expense	0.1		0.4
	Reclamation reserve balance at end of year	$	4.3	$	4.2

EMPLOYEE_COMPENSATION

EMPLOYEE COMPENSATION	3 Months Ended
	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
EMPLOYEE COMPENSATION	EMPLOYEE COMPENSATION
	The Partnership participates in various benefit plans offered and administered by OCI Enterprises and is allocated its portions of the annual costs related thereto. The specific plans are as follows:
	Retirement Plans - Benefits provided under the OCI Enterprises' Pension Plan for Salaried Employees and OCI Enterprises' Pension Plan for Hourly Employees are based upon years of service and average compensation for the highest 60 consecutive months of the employee's last 120 months of service, as defined. Each plan covers substantially all full-time employees hired before May 1, 2001. OCI Enterprises’ funding policy is to contribute an amount within the range of the minimum required and the maximum tax-deductible contribution. The Partnership's allocated portion of OCI Enterprises’ net periodic pension cost was $2.2 million and $1.7 million for the three months ended March 31, 2015 and 2014, respectively.
	Savings Plan - The OCI Enterprises' 401(k) Retirement Plan covers all eligible hourly and salaried employees. Eligibility is limited to all domestic residents and any foreign expatriates who are in the United States indefinitely. The plan permits employees to contribute specified percentages of their compensation, while the Partnership makes contributions based upon specified percentages of employee contributions. The Plan was amended such that participants hired on or subsequent to May 1, 2001, will receive an additional contribution from the Partnership based on a percentage of the participant’s base pay. Contributions made by OCI Enterprises for the three months ended March 31, 2015 and 2014, were $0.3 million and $0.5 million, respectively.
	Postretirement Benefits - Most of the Partnership's employees are eligible for postretirement benefits other than pensions if they reach retirement age while still employed.
	OCI Enterprises accounts for postretirement benefits on an accrual basis over an employee’s period of service. The postretirement plan, excluding pensions, are not funded, and OCI Enterprises has the right to modify or terminate the plan. OCI Enterprises' post-retirement benefits had a benefits obligation of $23.3 million and $22.8 million at March 31, 2015 and December 31, 2014, respectively. Effective January 1, 2013, the postretirement benefits for non-grandfathered retirees were amended to replace the medical coverage for post-65-year-old members with a fixed dollar contribution amount. As a result of the amendment, the accumulated and projected benefit obligation for postretirement benefits decreased by $8.7 million and resulted in a prior service credit of $7.7 million, which is being recognized as a reduction of net periodic postretirement benefit costs in future years. The Partnership’s allocated portion of postretirement benefit costs were expense of $0.1 million and income of $0.1 million for the three months ended March 31, 2015 and 2014, respectively.

EQUITY_BASED_COMPENSATION_Note

EQUITY - BASED COMPENSATION (Notes)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
EQUITY - BASED COMPENSATION	EQUITY - BASED COMPENSATION
	We grant various types of equity-based awards to participants, including restricted unit awards and time restricted unit performance awards ("TR Performance Unit Awards"). The key terms of our restricted unit awards and TR Performance Unit Awards, including all financial disclosures, are set forth in our Annual Report on Form 10-K for the year ended December 31, 2014.
	All employees, officers, consultants and non-employee directors of us and our parents and subsidiaries are eligible to be selected to participate in the OCI Resource Partners LLC 2013 Long-Term Incentive Plan (the "Plan" or "LTIP"). As of March 31, 2015, subject to further adjustment as provided in the Plan, a total of 926,987 common units were available for awards under the Plan. Any common units tendered by a participant in payment of the tax liability with respect to an award, including common units withheld from any such award, will not be available for future awards under the Plan. Common units awarded under the Plan may be reserved or made available from our authorized and unissued common units or from common units reacquired (through open market transactions or otherwise). Any common units issued under the Plan through the assumption or substitution of outstanding grants from an acquired company will not reduce the number of common units available for awards under the Plan. If any common units subject to an award under the Plan are forfeited, any common units counted against the number of common units available for issuance pursuant to the Plan with respect to such award will again be available for awards under the Plan.
	Non-employee Director Awards
	As of March 31, 2015, a total of 7,941 common units were granted to non-employee directors and were fully vested and expensed during the year ended December 31, 2014. There were no grants of non-employee director awards during the three months ended March 31, 2015.
	Restricted Unit Awards
	During the three months ended March 31, 2015, we granted restricted unit awards in the form of common units to certain of our executive officers which vest over a specified period of time, usually between one to three years, with vesting based on continued employment as of each applicable vesting date. Award recipients are entitled to distributions subject to the same restrictions as the underlying common unit. The awards are classified as equity awards, and are accounted for at fair value at grant date.
	The following table presents a summary of activity for the three months ended March 31, 2015:
		Restricted Stock Units
	(Units in whole numbers)	Number of Units		Grant-Date Average Fair Value per Unit (1)
	Nonvested at December 31, 2014	15,859		$	25.23
	Granted	1,112		22.54
	Vested	(2,552	)	25.7
	Nonvested at March 31, 2015	14,419		$	24.93
	(1) Determined by dividing the aggregate grant date fair value of awards by the number of awards issued. No estimated forfeiture rate was applied to the awards as of March 31, 2015, as all awards granted are expected to vest.
	TR Performance Unit Awards
	We granted TR Performance Unit Awards to certain of our executive officers. The TR Performance Unit Awards represent the right to receive a number of common units at a future date based on the achievement of market-based performance requirements in accordance with the TR Unit Performance Award agreement, and also include Distribution Equivalent Rights (“DERs”). DERs are the right to receive an amount equal to the accumulated cash distributions made during the period with respect to each common unit issued upon vesting. The TR Performance Unit Awards vest at the end of the performance period, usually between two to three years from the date of the grant. Performance is measured on the achievement of a specified level of total return, or TR, relative to the TR of a peer group comprised of other limited partnerships. The potential payout ranges from 0-200% of the grant target quantity and is adjusted based on our TR performance relative to the peer group.
	We utilized a Monte Carlo Simulation model to estimate the grant date fair value of TR Performance Unit Awards, with market conditions, granted to employees, which requires the input of highly subjective assumptions, including expected volatility and expected distribution yield. Historical and implied volatilities were used in estimating the fair value of these awards.
	The following table presents a summary of activity for the three months ended March 31, 2015:
		TR Unit Performance Awards
	(Units in whole numbers)	Number of Units		Grant-Date Average Fair Value per Unit (1)
	Nonvested at December 31, 2014	7,658		$	35.72
	Nonvested at March 31, 2015	7,658		$	35.72
	(1) Determined by dividing the aggregate grate date fair value of awards by the number of awards issued.
	Unrecognized Compensation Expense
	A summary of the Partnership's unrecognized compensation expense for its non-vested restricted time and performance based units, and the weighted-average periods over which the compensation expense is expected to be recognized are as following:
		Three Months Ended
		March 31, 2015
		Unrecognized Compensation Expense			Weighted Average to be Recognized
		(In millions)			(In years)
	Time-based units	$	0.3		1.61
	Performance-based units	0.2			1.76
	Total	$	0.5

ACCUMULATED_OTHER_COMPREHENSIV

ACCUMULATED OTHER COMPREHENSIVE LOSS AND OTHER COMPREHENSIVE LOSS (Notes)	3 Months Ended
	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Comprehensive Income (Loss) Note [Text Block]	ACCUMULATED OTHER COMPREHENSIVE LOSS
	Accumulated Other Comprehensive loss
	Accumulated other comprehensive loss as of March 31, 2015 and December 31, 2014, and changes within the period, consist of the following:
		Gains and Losses on Cash Flow Hedges
	($ in millions)
	Balance at December 31, 2014	$	(0.4	)
	Other comprehensive loss before reclassification	(1.3		)
	Amounts reclassified from accumulated other comprehensive loss	0.3
	Net current period other comprehensive loss	(1.0		)
	Balance at March 31, 2015	$	(1.4	)
	Other Comprehensive Loss
	The components of other comprehensive loss for the three months ended March 31, 2015 and 2014 consist of the following:
		Three Months Ended
		March 31,
		2015			2014
	($ in millions)
	Unrealized loss on derivatives:
	Mark to market adjustment on interest rate swaps	$	(0.5	)	$	(0.2	)
	Mark to market adjustment on natural gas forward contracts	(1.5		)	—
	Other comprehensive loss	$	(2.0	)	$	(0.2	)
	The components of other comprehensive loss that have been reclassified during the three months ended March 31, 2015 and 2014 consist of the following:
		Three Months Ended						Affected Line Items on the Unaudited Condensed Consolidated Statements of Operations and Comprehensive Income
	($ in millions)	March 31,
		2015			2014
	Details about other comprehensive loss components:
	Gains and losses on cash flow hedges:
	Interest rate swap contracts	$	0.3		$	0.1		Interest expense
	Total reclassifications for the period	$	0.3		$	0.1

COMMITMENTS_AND_CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES
	From time to time, the Partnership has various litigation, claims and assessments that arise in the normal course of business. Management does not believe, based upon its evaluation and discussion with counsel, that the ultimate outcome of any current matters, individually or in the aggregate, would have a material effect on the Partnership's financial position, results of operations or cash flows.
	Off-Balance Sheet Arrangements
	We have a self-bond agreement with the Wyoming Department of Environmental Quality under which we commit to pay directly for reclamation costs. As of March 31, 2015 and December 31, 2014, the amount of the bond was $33.9 million, respectively, which is the amount we would need to pay the State of Wyoming for reclamation costs if we cease mining operations currently. The amount of this self-bond is subject to change upon periodic re-evaluation by the Land Quality Division.
	OCI Wyoming's revenue bonds require it to maintain stand-by letters of credit totaling $20.3 million as of March 31, 2015.

AGREEMENTS_AND_TRANSACTIONS_WI

AGREEMENTS AND TRANSACTIONS WITH AFFILIATES	3 Months Ended
	Mar. 31, 2015
Related Party Transactions [Abstract]
AGREEMENTS AND TRANSACTIONS WITH AFFILIATES	AGREEMENTS AND TRANSACTIONS WITH AFFILIATES
	OCI Chemical is the exclusive sales agent for the Partnership and through its membership in ANSAC. OCI Chemical is responsible for promoting and increasing the use and sale of soda ash and other refined or processed sodium products produced. All actual sales and marketing costs incurred by OCI Chemical are charged directly to the Partnership. Selling, general and administrative expenses also include amounts charged to the Partnership by OCI Enterprises and OCI Chemical principally consisting of salaries, benefits, office supplies, professional fees, travel, rent and other costs of certain assets used by the Partnership. These transactions do not necessarily represent arm's length transactions and may not represent all costs if the Partnership operated on a stand alone basis.
	The total costs charged to the Partnership by OCI Enterprises and OCI Chemical, including ANSAC related charges, for the three months ended March 31, 2015 and 2014 are as follows:
		Three Months Ended March 31,
	($ in millions)	2015		2014
	OCI Enterprises	$	2.2	$	2
	OCI Chemical	1		1
	ANSAC (1)	0.8		0.3
	Total selling, general and administrative expenses - Affiliates	$	4	$	3.3
	(1) ANSAC allocates its expenses to ANSAC’s members using a pro rata calculation based on sales.
	Cost of products sold includes logistics services charged by ANSAC. For the three months ended March 31, 2015 and 2014 these costs were $2.6 million and $1.5 million, respectively.
	Net sales to affiliates for the three months ended March 31, 2015 and 2014 are as follows:
		Three Months Ended March 31,
	($ in millions)	2015		2014
	ANSAC	$	64	$	56.7
	OCI Alabama LLC	1.4		1.5
	Total	$	65.4	$	58.2
	As of March 31, 2015 and December 31, 2014, the Partnership had due from/to with OCI affiliates as follows:
		As of
	($ in millions)	March 31,		December 31,		March 31,		December 31,
		2015		2014		2015		2014
		Due from affiliates				Due to affiliates
	OCI Enterprises	$	0.2	$	1.7	$	3.2	$	4.5
	OCI Chemical	12		8.7		0.6		1.4
	OCI Chemical Europe NV	7.3		9.2		—		—
	Other	—		—		0.8		1.2
	Total	$	19.5	$	19.6	$	4.6	$	7.1

MAJOR_CUSTOMERS_AND_SEGMENT_RE

MAJOR CUSTOMERS AND SEGMENT REPORTING	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
MAJOR CUSTOMERS AND SEGMENT REPORTING	MAJOR CUSTOMERS AND SEGMENT REPORTING
	Our operations are similar in geography, nature of products we provide, and type of customers we serve. As the Partnership earns substantially all of its revenues through the sale of soda ash mined at a single location, we have concluded that we have one operating segment for reporting purposes.
	The net sales by geographic area for the three months ended March 31, 2015 and 2014 are as follows:
		Three Months Ended
		March 31,
	($ in millions)	2015		2014
	Domestic	$	48.6	$	48.6
	International
	ANSAC	64		56.7
	Other	7.8		10.9
	Total international	71.8		67.6
	Total net sales	$	120.4	$	116.2
	The Partnership's largest customer by sales is ANSAC. For the three months ended March 31, 2015 and 2014, there were no other customers that accounted for ten percent or more of total revenues.

FAIR_VALUE_MEASUREMENTS

FAIR VALUE MEASUREMENTS	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS
	The Partnership measures certain financial and non-financial assets and liabilities at fair value on a recurring basis. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. Fair value disclosures are reflected in a three-level hierarchy, maximizing the use of observable inputs and minimizing the use of unobservable inputs.
	A three-level valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability on the measurement date. The three levels are defined as follows:
	Ÿ	Level 1-inputs to the valuation methodology are quoted prices (unadjusted) for an identical asset or liability in an active market.
	Ÿ	Level 2-inputs to the valuation methodology include quoted prices for a similar asset or liability in an active market or model-derived valuations in which all significant inputs are observable for substantially the full term of the asset or liability.
	Ÿ	Level 3-inputs to the valuation methodology are unobservable and significant to the fair value measurement of the asset or liability.
	Financial instruments consist primarily of cash and cash equivalents, accounts receivable, accounts payable, accrued expenses and long-term debt. The carrying amounts of cash and cash equivalents, accounts receivable, accounts payable and accrued expenses approximate their fair value because of the nature of such instruments. Our interest rate swaps, foreign exchange contracts and natural gas forward contracts are measured at their fair value with Level 2 inputs based on quoted market values for similar but not identical financial instruments.
	Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis
	We have entered into interest rate swap contracts, designed as cash flow hedges, to mitigate our exposure to possible increases in interest rates. These contracts are for periods consistent with the exposure being hedged and generally will mature on July 18, 2018, the maturity date of the long-term debt under the OCI Wyoming Credit Facility. These contracts had an aggregate notional value of $75.5 million and a fair value liability of $1.3 million as of March 31, 2015 (December 31, 2014: notional value of $76.0 million; fair value liability of $0.7 million).
	We enter into foreign exchange forward contracts to reduce certain firm commitments denominated in currencies other than the U.S. dollar. However, the Partnership does not apply hedge accounting for these contracts. These contracts are for periods consistent with the exposure being hedged and generally have maturities of one year or less. The fair value of forward contracts, which are predominantly used to purchase U.S. dollars and sell Euros, totaled an asset of $0.5 million and $0.6 million at March 31, 2015 and December 31, 2014, respectively. These currency hedges have a notional value of $12.7 million and $6.9 million at March 31, 2015 and December 31, 2014, respectively.
	We enter into natural gas forward contracts, designed as cash flow hedges, to mitigate volatility in the price of certain of the natural gas we consume. These contracts have maturities ranging from 2015 to 2020. The fair value of these contracts had an aggregate notional value of $16.8 million and a fair value liability of $1.4 million as of as of March 31, 2015. We had no similar contracts outstanding as of December 31, 2014.
	Financial Assets and Liabilities not Measured at Fair Value
	The fair value of our long-term debt is based on present rates for indebtedness with similar amounts, durations and credit risks. See Note 4 "Debt" for additional information on our debt arrangements.

SUBSEQUENT_EVENTS

SUBSEQUENT EVENTS	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS
	Distribution Declaration
	On April 16, 2015, the members of the Board of Managers of OCI Wyoming LLC, approved a cash distribution to the members of OCI Wyoming in the aggregate amount of $22.3 million. This distribution is payable on May 8, 2015.
	On April 17, 2015, the Partnership declared a cash distribution approved by the board of directors of its general partner. The cash distribution for the first quarter of 2015 of $0.538 per unit will be paid on May 15, 2015 to unitholders of record on May 1, 2015.

CORPORATE_STRUCTURE_AND_SUMMAR1

CORPORATE STRUCTURE AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	Basis of Presentation and Significant Accounting Policies
	The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles ("GAAP") applicable to interim period financial statements and reflect all adjustments, consisting of normal recurring accruals, which are necessary for fair presentation of the results of operations, financial position and cash flows for the periods presented. All significant intercompany transactions, balances, revenue and expenses have been eliminated in consolidation. The results of operations for the period ended March 31, 2015 are not necessarily indicative of the operating results for the full year.
	These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes to audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2014 (the "2014 Annual Report"). There has been no material change in the significant accounting policies followed by us during the three month periods ended March 31, 2015 from those disclosed in the 2014 Annual Report.
Non-controlling Interests	Non-controlling interests
	NRP Trona LLC, a wholly-owned subsidiary of Natural Resource Partners L.P. ("NRP"), currently owns a 49.0% membership interest in OCI Wyoming
Use of Estimates	Use of Estimates
	The preparation of these unaudited condensed consolidated financial statements, in accordance with GAAP, requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the dates of the unaudited condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Subsequent Events	Subsequent Events
	We have evaluated subsequent events through the filing of this Quarterly Report on Form 10-Q.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Topic 606) that requires companies to recognize revenue when a customer obtains control rather than when companies have transferred substantially all risks and rewards of a good or service. In April 2015, FASB made a decision to defer the effective date of the new revenue recognition standard by one year. As a result, public entities would apply the new revenue standard to annual reporting periods beginning after December 15, 2017 and interim periods therein and requires expanded disclosures. We are currently assessing the impact the adoption of ASU 2014-09 will have on our condensed consolidated financial statements.
	In June 2014, the FASB issued ASU No. 2014-12, Compensation – Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period. The new guidance requires that share-based compensation that require a specific performance target to be achieved in order for employees to become eligible to vest in the awards and that could be achieved after an employee completes the requisite service period be treated as a performance condition. As such, the performance target should not be reflected in estimating the grant-date fair value of the award. Compensation costs should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. If the performance target becomes probable of being achieved before the end of the requisite service period, the remaining unrecognized compensation cost should be recognized prospectively over the remaining requisite service period. The total amount of compensation cost recognized during and after the requisite service period should reflect the number of awards that are expected to vest and should be adjusted to reflect those awards that ultimately vest. The requisite service period ends when the employee can cease rendering service and still be eligible to vest in the award if the performance target is achieved. This new guidance is effective for fiscal years and interim periods within those years beginning after December 15, 2015. Early adoption is permitted. Entities may apply the amendments in this Update either (a) prospectively to all awards granted or modified after the effective date or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. The adoption of ASU 2014-12 has not had a material impact on our financial position or results of operations.

NET_INCOME_PER_UNIT_AND_CASH_D1

NET INCOME PER UNIT AND CASH DISTRIBUTION (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Calculation of net income per unit
		Three Months Ended
		March 31,
	($ and unit data in millions, except per unit data)	2015				2014
	Net income attributable to OCI Resources LP	$	12.8			$	10.3
	Less: General partner's interest in net income	0.2				0.2
	Total limited partners' interest in net income	$	12.6			$	10.1
	Weighted average limited partner units outstanding:
	Common - Public and OCI Holdings (basic and diluted)	9.8				9.8
	Subordinated - OCI Holdings (basic and diluted)	9.8				9.8
	Total weighted average limited partner units outstanding	19.6				19.6
	Net income per limited partner unit:
	Common - Public and OCI Holdings (basic and diluted)	$	0.64			$	0.52
	Subordinated - OCI Holdings (basic and diluted)	$	0.64			$	0.52
Schedule of the Allocation of Net Income
		Three Months Ended
		March 31,
	($ in millions, except per unit data)	2015				2014
	Net income attributable to common unitholders:
	Distributions (a)	$	5.3			$	4.9
	Undistributed earnings	1				0.2
	Common unitholders' interest in net income	$	6.3			$	5.1
	Net income attributable to subordinated unitholders:
	Distributions (a)	$	5.3			$	4.8
	Undistributed earnings	1				0.2
	Subordinated unitholders' interest in net income	$	6.3			$	5
	(a) Distributions declared per unit for the period	$	0.538			$	0.5
Percentage allocations of distributions from operating surplus	The following table illustrates the percentage allocations of distributions from operating surplus between the unitholders and our general partner based on the specified target distribution levels. The amounts set forth under the column heading "Marginal Percentage Interest in Distributions" are the percentage interests of our general partner and the unitholders in any distributions from operating surplus we distribute up to and including the corresponding amount in the column "Total Quarterly Distribution per Unit Target Amount." The percentage interests shown for our unitholders and our general partner for the minimum quarterly distribution also apply to quarterly distribution amounts that are less than the minimum quarterly distribution. The percentage interests set forth below for our general partner (1) include its 2.0% general partner interest, (2) assume that our general partner has contributed any additional capital necessary to maintain its 2.0% general partner interest, (3) assume that our general partner has not transferred its IDRs and (4) assume there are no arrearages on common units.
				Marginal Percentage
				Interest in
				Distributions
		Total Quarterly		Unitholders			General Partner
		Distribution per Unit
		Target Amount
	Minimum Quarterly Distribution	$0.50		98	%		2	%
	First Target Distribution	above $0.5000 up to $0.5750		98	%		2	%
	Second Target Distribution	above $0.5750 up to $0.6250		85	%		15	%
	Third Target Distribution	above $0.6250 up to $0.7500		75	%		25	%
	Thereafter	above $0.7500		50	%		50	%

INVENTORY_Tables

INVENTORY (Tables)	3 Months Ended
	Mar. 31, 2015
Inventory Disclosure [Abstract]
Schedule of inventory	Inventory as of March 31, 2015 and December 31, 2014 consists of the following:
	($ in millions)	March 31,		December 31,
		2015		2014
	Raw materials	$	8.4	$	6.4
	Finished goods	13.1		10.4
	Stores inventory	27.8		26.4
	Total	$	49.3	$	43.2

DEBT_Tables

DEBT (Tables)	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Components of long-term debt	Long-term debt as of March 31, 2015 and December 31, 2014 consists of the following:
	($ in millions)	March 31,		December 31,
		2015		2014
	Variable Rate Demand Revenue Bonds, principal due October 1, 2018, interest payable monthly, bearing monthly interest rate of 0.12% at March 31, 2015 and 0.14% December 31, 2014	$	11.4	$	11.4
	Variable Rate Demand Revenue Bonds, principal due August 1, 2017, interest payable monthly, bearing monthly interest rate of 0.12% at March 31, 2015 and 0.14% December 31, 2014	8.6		8.6
	OCI Wyoming Credit Facility, unsecured principal expiring on July 18, 2018, interest payable quarterly, bearing quarterly variable interest at 2.00% at March 31, 2015 and 1.9781% at December 31, 2014	125		125
	Total debt	$	145	$	145
	Current portion of long-term debt	—		—
	Total long-term debt	$	145	$	145
Aggregate maturities on long-term debt	Aggregate maturities required on long-term debt at March 31, 2015 are due in future years as follows:
	($ in millions)	Amount
	2017	$	8.6
	2018	136.4
	Total	$	145

OTHER_NONCURRENT_LIABILITIES_T

OTHER NON-CURRENT LIABILITIES (Tables)	3 Months Ended
	Mar. 31, 2015
Asset Retirement Obligation Disclosure [Abstract]
Schedule of other non-current liabilities
	($ in millions)	March 31,		December 31,
		2015		2014
	Reclamation reserve balance at beginning of year	$	4.2	$	3.8
	Accretion expense	0.1		0.4
	Reclamation reserve balance at end of year	$	4.3	$	4.2

EQUITY_BASED_COMPENSATION_Tabl

EQUITY - BASED COMPENSATION (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Restricted Unit Award Activity	The following table presents a summary of activity for the three months ended March 31, 2015:
		Restricted Stock Units
	(Units in whole numbers)	Number of Units		Grant-Date Average Fair Value per Unit (1)
	Nonvested at December 31, 2014	15,859		$	25.23
	Granted	1,112		22.54
	Vested	(2,552	)	25.7
	Nonvested at March 31, 2015	14,419		$	24.93
Schedule of Nonvested Unit Activity	The following table presents a summary of activity for the three months ended March 31, 2015:
		TR Unit Performance Awards
	(Units in whole numbers)	Number of Units		Grant-Date Average Fair Value per Unit (1)
	Nonvested at December 31, 2014	7,658		$	35.72
	Nonvested at March 31, 2015	7,658		$	35.72
	(1) Determined by dividing the aggregate grate date fair value of awards by the number of awards issued.
	Unrecognized Compensation Expense
	A summary of the Partnership's unrecognized compensation expense for its non-vested restricted time and performance based units, and the weighted-average periods over which the compensation expense is expected to be recognized are as following:
		Three Months Ended
		March 31, 2015
		Unrecognized Compensation Expense			Weighted Average to be Recognized
		(In millions)			(In years)
	Time-based units	$	0.3		1.61
	Performance-based units	0.2			1.76
	Total	$	0.5
Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block]
		Three Months Ended
		March 31, 2015
		Unrecognized Compensation Expense			Weighted Average to be Recognized
		(In millions)			(In years)
	Time-based units	$	0.3		1.61
	Performance-based units	0.2			1.76
	Total	$	0.5

ACCUMULATED_OTHER_COMPREHENSIV1

ACCUMULATED OTHER COMPREHENSIVE LOSS AND OTHER COMPREHENSIVE LOSS (Tables)	3 Months Ended
	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
		Gains and Losses on Cash Flow Hedges
	($ in millions)
	Balance at December 31, 2014	$	(0.4	)
	Other comprehensive loss before reclassification	(1.3		)
	Amounts reclassified from accumulated other comprehensive loss	0.3
	Net current period other comprehensive loss	(1.0		)
	Balance at March 31, 2015	$	(1.4	)
Comprehensive Income (Loss) [Table Text Block]
		Three Months Ended
		March 31,
		2015			2014
	($ in millions)
	Unrealized loss on derivatives:
	Mark to market adjustment on interest rate swaps	$	(0.5	)	$	(0.2	)
	Mark to market adjustment on natural gas forward contracts	(1.5		)	—
	Other comprehensive loss	$	(2.0	)	$	(0.2	)
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
		Three Months Ended						Affected Line Items on the Unaudited Condensed Consolidated Statements of Operations and Comprehensive Income
	($ in millions)	March 31,
		2015			2014
	Details about other comprehensive loss components:
	Gains and losses on cash flow hedges:
	Interest rate swap contracts	$	0.3		$	0.1		Interest expense
	Total reclassifications for the period	$	0.3		$	0.1

AGREEMENTS_AND_TRANSACTIONS_WI1

AGREEMENTS AND TRANSACTIONS WITH AFFILIATES (Tables)	3 Months Ended
	Mar. 31, 2015
Costs Charged by Affiliates
Related Party Transaction [Line Items]
Schedule of related party transactions	The total costs charged to the Partnership by OCI Enterprises and OCI Chemical, including ANSAC related charges, for the three months ended March 31, 2015 and 2014 are as follows:
		Three Months Ended March 31,
	($ in millions)	2015		2014
	OCI Enterprises	$	2.2	$	2
	OCI Chemical	1		1
	ANSAC (1)	0.8		0.3
	Total selling, general and administrative expenses - Affiliates	$	4	$	3.3
	(1) ANSAC allocates its expenses to ANSAC’s members using a pro rata calculation based on sales.
Net Sales to Affiliates
Related Party Transaction [Line Items]
Schedule of related party transactions	Net sales to affiliates for the three months ended March 31, 2015 and 2014 are as follows:
		Three Months Ended March 31,
	($ in millions)	2015		2014
	ANSAC	$	64	$	56.7
	OCI Alabama LLC	1.4		1.5
	Total	$	65.4	$	58.2
Receivables and Payables with Affiliates
Related Party Transaction [Line Items]
Schedule of related party transactions	As of March 31, 2015 and December 31, 2014, the Partnership had due from/to with OCI affiliates as follows:
		As of
	($ in millions)	March 31,		December 31,		March 31,		December 31,
		2015		2014		2015		2014
		Due from affiliates				Due to affiliates
	OCI Enterprises	$	0.2	$	1.7	$	3.2	$	4.5
	OCI Chemical	12		8.7		0.6		1.4
	OCI Chemical Europe NV	7.3		9.2		—		—
	Other	—		—		0.8		1.2
	Total	$	19.5	$	19.6	$	4.6	$	7.1

MAJOR_CUSTOMERS_AND_SEGMENT_RE1

MAJOR CUSTOMERS AND SEGMENT REPORTING (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Schedule of sales by geographic area	The net sales by geographic area for the three months ended March 31, 2015 and 2014 are as follows:
		Three Months Ended
		March 31,
	($ in millions)	2015		2014
	Domestic	$	48.6	$	48.6
	International
	ANSAC	64		56.7
	Other	7.8		10.9
	Total international	71.8		67.6
	Total net sales	$	120.4	$	116.2

CORPORATE_STRUCTURE_AND_SUMMAR2

CORPORATE STRUCTURE AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	Mar. 31, 2015
Corporate Structure and Ownership [Line Items]
Members' Equity	$0.51
Members' Equity Attributable to Noncontrolling Interest	$0.49

NET_INCOME_PER_UNIT_AND_CASH_D2

NET INCOME PER UNIT AND CASH DISTRIBUTION - Calculation and allocation of net income per unit (Details) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income attributable to OCI Resources LP	$12.80	$10.30
Less: General partner's interest in net income	0.2	0.2
Total limited partners' interest in net income	12.6	10.1
Distribution Made to Limited Partner, Distributions Declared, Per Unit	$0.54	$0.50
Total weighted average limited partner units outstanding basic and diluted	19,600,000	19,600,000
Common unit
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted average limited partner units outstanding (basic and diluted) (shares)	9,787,434	9,775,500
Net income per limited partner unit (basic and diluted) (dollars per share)	$0.64	$0.52
Common Unitholders
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total limited partners' interest in net income	6.3	5.1
Distributions	5.3	4.9
Undistributed earnings	1	0.2
Subordinated Unitholders
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total limited partners' interest in net income	6.3	5
Weighted average limited partner units outstanding (basic and diluted) (shares)	9,775,500	9,775,500
Net income per limited partner unit (basic and diluted) (dollars per share)	$0.64	$0.52
Distributions	5.3	4.8
Undistributed earnings	$1	$0.20

NET_INCOME_PER_UNIT_AND_CASH_D3

NET INCOME PER UNIT AND CASH DISTRIBUTION - Percentage allocation of distributions (Details) (USD $)	3 Months Ended
	Mar. 31, 2015
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Minimum Quarterly Distribution	$0.50
General Partner
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Percentage of general partner ownership interest held	2.00%
Percentage Allocation of Operating Surplus During Subordination Period	2.00%
Up to minimum quarterly distribution | Common unit
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Percentage Allocation of Operating Surplus During Subordination Period	98.00%
Up to minimum quarterly distribution | General Partner
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Percentage Allocation of Operating Surplus During Subordination Period	2.00%
Up to arrearages on prior quarter minimum distributions | Common unit
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Percentage Allocation of Operating Surplus During Subordination Period	98.00%
Up to arrearages on prior quarter minimum distributions | General Partner
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Percentage Allocation of Operating Surplus During Subordination Period	2.00%
Up to minimum distribution for subordinated units | Subordinated Units
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Percentage Allocation of Operating Surplus During Subordination Period	98.00%
Up to minimum distribution for subordinated units | General Partner
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Percentage Allocation of Operating Surplus During Subordination Period	2.00%
Second Target Distribution | General Partner
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Increasing Percentage Allocation of Operating Surplus General Partner Incentive	13.00%
Third Target Distribution | General Partner
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Increasing Percentage Allocation of Operating Surplus General Partner Incentive	23.00%
Thereafter | General Partner
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Increasing Percentage Allocation of Operating Surplus General Partner Incentive	48.00%

NET_INCOME_PER_UNIT_AND_CASH_D4

NET INCOME PER UNIT AND CASH DISTRIBUTION - Target distributions and marginal percentage interests (Details) (USD $)	3 Months Ended
	Mar. 31, 2015
Minimum Quarterly Distribution
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Maximum Quarterly Distribution Target Levels	$0.50
First Target Distribution
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Maximum Quarterly Distribution Target Levels	$0.57
Minimum Quarterly Distribution Target Levels	$0.50
Second Target Distribution
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Maximum Quarterly Distribution Target Levels	$0.63
Minimum Quarterly Distribution Target Levels	$0.57
Third Target Distribution
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Maximum Quarterly Distribution Target Levels	$0.75
Minimum Quarterly Distribution Target Levels	$0.63
Thereafter
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Minimum Quarterly Distribution Target Levels	$0.75
Unitholders | Minimum Quarterly Distribution
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Marginal Interest in Distribution, Percentage	98.00%
Unitholders | First Target Distribution
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Marginal Interest in Distribution, Percentage	98.00%
Unitholders | Second Target Distribution
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Marginal Interest in Distribution, Percentage	85.00%
Unitholders | Third Target Distribution
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Marginal Interest in Distribution, Percentage	75.00%
Unitholders | Thereafter
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Marginal Interest in Distribution, Percentage	50.00%
General Partner | Minimum Quarterly Distribution
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Marginal Interest in Distribution, Percentage	2.00%
General Partner | First Target Distribution
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Marginal Interest in Distribution, Percentage	2.00%
General Partner | Second Target Distribution
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Marginal Interest in Distribution, Percentage	15.00%
General Partner | Third Target Distribution
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Marginal Interest in Distribution, Percentage	25.00%
General Partner | Thereafter
Schedule of Percentage Allocation of Distributions From Operating Surplus [Line Items]
Marginal Interest in Distribution, Percentage	50.00%

INVENTORY_Details

INVENTORY (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Inventory Disclosure [Abstract]
Raw materials	$8.40	$6.40
Finished goods	13.1	10.4
Stores inventory	27.8	26.4
Total	$49.30	$43.20

DEBT_Components_of_longterm_de

DEBT - Components of long-term debt (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Debt
Total	$145	$145
Current portion of long-term debt	0	0
Total long-term debt	145	145
Variable Rate Demand Revenue Bonds | Principal due October 1, 2018
Debt
Interest rate (as a percent)	0.12%	0.14%
Total	11.4	11.4
Variable Rate Demand Revenue Bonds | Principal due August 1, 2017
Debt
Interest rate (as a percent)	0.12%	0.14%
Total	8.6	8.6
Revolving credit facility
Debt
Interest rate (as a percent)	2.00%	1.98%
Total	$125	$125

DEBT_Maturities_of_longterm_de

DEBT - Maturities of long-term debt (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Debt Disclosure [Abstract]
Long-term Debt, Maturities, Repayments of Principal in Year Two	$8.60
Long-term Debt, Maturities, Repayments of Principal in Year Three	136.4
Total	$145	$145

DEBT_Narrative_Details

DEBT - Narrative (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Jul. 18, 2013	Dec. 31, 2014	Dec. 31, 2016
Line of Credit Facility [Line Items]
Loss of Control Percentage Threshold	50.10%
Bank of America, NA | Revolving credit facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$10
Revolving credit facility	0
Consolidated Fixed Charge Coverage Ratio	105.00%
maximum consolidated capital expenditures	50
Same Day Swing Line Advances | Bank of America, NA | Revolving credit facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases	5
Letters of Credit | Bank of America, NA | Revolving credit facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases	5
Minimum | Bank of America, NA | Revolving credit facility
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.28%
Maximum | Bank of America, NA | Revolving credit facility
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.35%
OCI Wyoming Co | Bank of America, NA | Revolving credit facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		190
Line of Credit Facility Additional Borrowing Capacity	75
Consolidated Leverage Ratio	300.00%
Consolidated Fixed Charge Coverage Ratio	110.00%
maximum consolidated capital expenditures	50
OCI Wyoming Co | Same Day Swing Line Advances | Bank of America, NA | Revolving credit facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases	20
OCI Wyoming Co | Letters of Credit | Bank of America, NA | Revolving credit facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases	40
OCI Wyoming Co | Minimum | Bank of America, NA | Revolving credit facility
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.28%
OCI Wyoming Co | Maximum | Bank of America, NA | Revolving credit facility
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.35%
Standby Letters of Credit [Member] | OCI Wyoming LP [Member]
Line of Credit Facility [Line Items]
Revolving credit facility	20.3		$20.30
Scenario, Forecast [Member] | Bank of America, NA | Revolving credit facility
Line of Credit Facility [Line Items]
Consolidated Fixed Charge Coverage Ratio				110.00%
Scenario, Forecast [Member] | OCI Wyoming Co | Bank of America, NA | Revolving credit facility
Line of Credit Facility [Line Items]
Consolidated Fixed Charge Coverage Ratio				115000.00%

OTHER_NONCURRENT_LIABILITIES_D

OTHER NON-CURRENT LIABILITIES (Details) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Asset Retirement Obligation Disclosure [Abstract]
Reclamation reserve balance at beginning of year	$4.20	$3.80
Accretion Expense	0.1	0.4
Reclamation reserve balance at end of year	$4.30	$4.20

EMPLOYEE_COMPENSATION_Details

EMPLOYEE COMPENSATION (Details) (USD $)	0 Months Ended	3 Months Ended
In Millions, unless otherwise specified	Jan. 01, 2013	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Average Compensation Period		60 months
Defined Benefit Plan, Period of Last Service		120 months
Pension
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension cost		$2.20	$1.70
Supplemental Employee Retirement Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions by OCI Enterprises		0.3	0.5
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension cost		0.1	-0.1
Benefit obligation		23.3		22.8
Decrease in postretirement benefits due to amendments	8.7
Prior service credit	$7.70

EQUITY_BASED_COMPENSATION_Deta

EQUITY - BASED COMPENSATION (Details) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	926,987
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted	7,941
Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense	$0
Restricted Stock Units (RSUs) [Member]
Number of Units
Nonvested at	15,859
Granted	1,112	[1]
Vested	-2,552
Nonvested at	14,419
Grant-Date Average Fair Value per Unit
Nonvested at	$24.93		$25.23
Granted	$22.54	[1]
Vested	$25.70
Nonvested at	$24.93		$25.23
Restricted Stock Units (RSUs) [Member] | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	1 year
Restricted Stock Units (RSUs) [Member] | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
TSR Unit Performance Awards
Number of Units
Nonvested at			7,658
Nonvested at	7,658		7,658
Grant-Date Average Fair Value per Unit
Nonvested at	$35.72	[2]	$35.72	[2]
Nonvested at	$35.72	[2]	$35.72	[2]
TSR Unit Performance Awards | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	2 years
Payout Range	0.00%
TSR Unit Performance Awards | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Payout Range	200.00%
[1]	(1) Determined by dividing the aggregate grant date fair value of awards by the number of awards issued. No estimated forfeiture rate was applied to the awards as of MarchB 31, 2015, as all awards granted are expected to vest.
[2]	Determined by dividing the aggregate grate date fair value of awards by the number of awards issued.

EQUITY_BASED_COMPENSATION_Unre

EQUITY - BASED COMPENSATION Unrecognized Compensation Expense (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$0.50
Time-Based Units [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	0.3
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year 6 months 39 days
Performance Shares [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$0.20
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year 9 months 2 days

ACCUMULATED_OTHER_COMPREHENSIV2

ACCUMULATED OTHER COMPREHENSIVE LOSS AND OTHER COMPREHENSIVE LOSS Accumulated other comprehensive loss and other comprehensive loss (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	($1.40)		($0.40)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	-1.3
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.3	0.1
Other Comprehensive Income (Loss), Net of Tax	($1)

ACCUMULATED_OTHER_COMPREHENSIV3

ACCUMULATED OTHER COMPREHENSIVE LOSS AND OTHER COMPREHENSIVE LOSS Other Comprehensive Income (Loss) Components (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income/(loss) on derivative financial instruments	($2)	($0.20)
Interest Rate Swap [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income/(loss) on derivative financial instruments	-0.5	-0.2
Natural Gas Hedge Contract [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income/(loss) on derivative financial instruments	($1.50)	$0

ACCUMULATED_OTHER_COMPREHENSIV4

ACCUMULATED OTHER COMPREHENSIVE LOSS AND OTHER COMPREHENSIVE LOSS Reclassification out of Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$0.30	$0.10
Interest Expense	0.9	1.2
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest Expense	$0.30	$0.10

COMMITMENTS_AND_CONTINGENCIES_

COMMITMENTS AND CONTINGENCIES (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Self-bond agreement for reclamation costs
Other Commitments [Line Items]
Off balance sheet commitment	$33.90
OCI Wyoming LP [Member] | Standby Letters of Credit [Member]
Other Commitments [Line Items]
Line of Credit Facility, Amount Outstanding	$20.30	$20.30

AGREEMENTS_AND_TRANSACTIONS_WI2

AGREEMENTS AND TRANSACTIONS WITH AFFILIATES - Costs charged by affiliates (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014
Related Party Transaction [Line Items]
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party	$4		$3.30
OCI Enterprises
Related Party Transaction [Line Items]
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party	2.2		2
OCI Chemical
Related Party Transaction [Line Items]
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party	1		1
ANSAC
Related Party Transaction [Line Items]
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party	$0.80	[1]	$0.30	[1]
[1]	ANSAC allocates its expenses to ANSACbs members using a pro rata calculation based on sales.

AGREEMENTS_AND_TRANSACTIONS_WI3

AGREEMENTS AND TRANSACTIONS WITH AFFILIATES - Narrative (Details) (ANSAC, USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
ANSAC
Related Party Transaction [Line Items]
Cost of Goods Sold	$2.60	$1.50

AGREEMENTS_AND_TRANSACTIONS_WI4

AGREEMENTS AND TRANSACTIONS WITH AFFILIATES - Net sales to affiliates (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Related Party Transaction [Line Items]
Net sales to affiliates	$65.40	$58.20
ANSAC
Related Party Transaction [Line Items]
Net sales to affiliates	64	56.7
OCI Alabama LLC
Related Party Transaction [Line Items]
Net sales to affiliates	$1.40	$1.50

AGREEMENTS_AND_TRANSACTIONS_WI5

AGREEMENTS AND TRANSACTIONS WITH AFFILIATES - Receivables from or payables to affiliates (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Related Party Transaction [Line Items]
Due from affiliates	$19.50	$19.60
Due to affiliates	4.6	7.1
OCI Enterprises
Related Party Transaction [Line Items]
Due from affiliates	0.2	1.7
Due to affiliates	3.2	4.5
OCI Chemical
Related Party Transaction [Line Items]
Due from affiliates	12	8.7
Due to affiliates	0.6	1.4
OCI Chemical Europe NV
Related Party Transaction [Line Items]
Due from affiliates	7.3	9.2
Due to affiliates	0	0
Other
Related Party Transaction [Line Items]
Due from affiliates	0	0
Due to affiliates	$0.80	$1.20

MAJOR_CUSTOMERS_AND_SEGMENT_RE2

MAJOR CUSTOMERS AND SEGMENT REPORTING - Narrative (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
	item	item
Segment Reporting [Abstract]
Number of operating segments	1
Number of significant customers other than ANSAC	0	0

MAJOR_CUSTOMERS_AND_SEGMENT_RE3

MAJOR CUSTOMERS AND SEGMENT REPORTING - Sales by geographic area (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Sales by geographical area
Sales	$120.40	$116.20
Sales to affiliates	65.4	58.2
ANSAC
Sales by geographical area
Sales to affiliates	64	56.7
Domestic
Sales by geographical area
Sales	48.6	48.6
International
Sales by geographical area
Sales	71.8	67.6
International | Other
Sales by geographical area
Sales	7.8	10.9
International | ANSAC
Sales by geographical area
Sales to affiliates	$64	$56.70

FAIR_VALUE_MEASUREMENTS_Detail

FAIR VALUE MEASUREMENTS (Details) (Fair Value, Measurements, Recurring, Level 2, USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative aggregate notional value	$75.50	$76
Derivative fair value	1.3	0.7
Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative aggregate notional value	12.7	6.9
Derivative Asset	0.5	0.6
Natural Gas Hedge Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative aggregate notional value	16.8
Derivative fair value	($1.40)

SUBSEQUENT_EVENTS_Details

SUBSEQUENT EVENTS (Details) (USD $)	3 Months Ended		0 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Apr. 17, 2015	Apr. 16, 2015
Subsequent Event [Line Items]
Distribution Made to Limited Partner, Distributions Declared, Per Unit	$0.54	$0.50
Subsequent Event
Subsequent Event [Line Items]
Distribution Made to Limited Partner, Cash Distributions Paid				$22.30
Distribution Made to Limited Partner, Distributions Declared, Per Unit			$0.54