SUPPLEMENTARY GUARANTOR INFORMATION (Tables)

12 Months Ended

Dec. 31, 2018

Dec. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Supplemental Condensed Consolidating Financial Position

Condensed Consolidating Statement of Financial Position
As of December 31, 2018
(In Millions)
	Cleveland-Cliffs Inc.		Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Eliminations			Consolidated
ASSETS
CURRENT ASSETS
Cash and cash equivalents	$	819.8	$	0.7	$	2.7		$	—		$	823.2
Accounts receivable, net	9.2		221.3		0.3			(4.1		)	226.7
Inventories	—		87.9		—			—			87.9
Supplies and other inventories	—		93.2		—			—			93.2
Derivative assets	0.1		91.4		—			—			91.5
Income tax receivable, current	117.3		—		—			—			117.3
Current assets of discontinued operations	—		—		12.4			—			12.4
Other current assets	10.0		16.9		0.5			—			27.4
TOTAL CURRENT ASSETS	956.4		511.4		15.9			(4.1		)	1,479.6
PROPERTY, PLANT AND EQUIPMENT, NET	13.3		1,221.9		50.8			—			1,286.0
OTHER ASSETS
Deposits for property, plant and equipment	—		68.4		14.6			—			83.0
Income tax receivable, non-current	117.2		4.1		—			—			121.3
Deferred income taxes	463.6		—		1.2			—			464.8
Investment in subsidiaries	1,262.3		50.8		—			(1,313.1		)	—
Long-term intercompany notes	—		—		121.3			(121.3		)	—
Other non-current assets	8.0		85.4		1.5			—			94.9
TOTAL OTHER ASSETS	1,851.1		208.7		138.6			(1,434.4		)	764.0
TOTAL ASSETS	$	2,820.8	$	1,942.0	$	205.3		$	(1,438.5	)	$	3,529.6
LIABILITIES
CURRENT LIABILITIES
Accounts payable	$	5.3	$	181.4	$	4.2		$	(4.1	)	$	186.8
Accrued employment costs	28.5		45.4		0.1			—			74.0
State and local taxes payable	—		35.4		0.1			—			35.5
Accrued interest	38.4		—		—			—			38.4
Partnership distribution payable	—		43.5		—			—			43.5
Current liabilities of discontinued operations	—		—		6.7			—			6.7
Other current liabilities	30.6		51.3		1.4			—			83.3
TOTAL CURRENT LIABILITIES	102.8		357.0		12.5			(4.1		)	468.2
POSTEMPLOYMENT BENEFIT LIABILITIES
Pensions	58.3		390.5		(230.4		)	—			218.4
Other postretirement benefits	6.0		23.9		0.4			—			30.3
TOTAL POSTEMPLOYMENT BENEFIT LIABILITIES	64.3		414.4		(230.0		)	—			248.7
ENVIRONMENTAL AND MINE CLOSURE OBLIGATIONS	—		152.1		19.9			—			172.0
LONG-TERM DEBT	2,092.9		—		—			—			2,092.9
LONG-TERM INTERCOMPANY NOTES	121.3		—		—			(121.3		)	—
NON-CURRENT LIABILITIES OF DISCONTINUED OPERATIONS	—		—		8.3			—			8.3
OTHER LIABILITIES	15.3		99.5		0.5			—			115.3
TOTAL LIABILITIES	2,396.6		1,023.0		(188.8		)	(125.4		)	3,105.4
COMMITMENTS AND CONTINGENCIES
EQUITY
TOTAL EQUITY	424.2		919.0		394.1			(1,313.1		)	424.2
TOTAL LIABILITIES AND EQUITY	$	2,820.8	$	1,942.0	$	205.3		$	(1,438.5	)	$	3,529.6

Condensed Consolidating Statement of Financial Position
As of December 31, 2017
(In Millions)
	Cleveland-Cliffs Inc.			Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Eliminations			Consolidated
ASSETS
CURRENT ASSETS
Cash and cash equivalents	$	948.9		$	2.1	$	27.3		$	—		$	978.3
Accounts receivable, net	4.5			102.9		—			(0.7		)	106.7
Inventories	—			138.4		—			—			138.4
Supplies and other inventories	—			88.8		—			—			88.8
Derivative assets	—			37.9		—			—			37.9
Income tax receivable, current	11.4			1.9		—			—			13.3
Loans to and accounts receivables from the Canadian Entities	44.7			6.9		—			—			51.6
Current assets of discontinued operations	—			—		118.5			—			118.5
Other current assets	5.0			5.6		0.5			—			11.1
TOTAL CURRENT ASSETS	1,014.5			384.5		146.3			(0.7		)	1,544.6
PROPERTY, PLANT AND EQUIPMENT, NET	17.5			965.5		50.8			—			1,033.8
OTHER ASSETS
Deposits for property, plant and equipment	—			8.2		9.6			—			17.8
Income tax receivable, non-current	235.3			—		—			—			235.3
Investment in subsidiaries	1,024.3			29.9		—			(1,054.2		)	—
Long-term intercompany notes	—			—		242.0			(242.0		)	—
Non-current assets of discontinued operations	—			—		20.3			—			20.3
Other non-current assets	7.8			91.8		2.0			—			101.6
TOTAL OTHER ASSETS	1,267.4			129.9		273.9			(1,296.2		)	375.0
TOTAL ASSETS	$	2,299.4		$	1,479.9	$	471.0		$	(1,296.9	)	$	2,953.4
LIABILITIES
CURRENT LIABILITIES
Accounts payable	$	7.1		$	92.3	$	0.8		$	(0.7	)	$	99.5
Accrued employment costs	13.7			38.9		0.1			—			52.7
State and local taxes payable	—			30.0		0.2			—			30.2
Accrued interest	31.4			—		—			—			31.4
Contingent claims	55.6			—		—			—			55.6
Partnership distribution payable	—			44.2		—			—			44.2
Current liabilities of discontinued operations	—			—		75.0			—			75.0
Other current liabilities	7.4			54.5		1.7			—			63.6
TOTAL CURRENT LIABILITIES	115.2			259.9		77.8			(0.7		)	452.2
POSTEMPLOYMENT BENEFIT LIABILITIES
Pensions	59.2			403.6		(240.0		)	—			222.8
Other postretirement benefits	7.2			27.0		0.7			—			34.9
TOTAL POSTEMPLOYMENT BENEFIT LIABILITIES	66.4			430.6		(239.3		)	—			257.7
ENVIRONMENTAL AND MINE CLOSURE OBLIGATIONS	—			140.6		27.1			—			167.7
LONG-TERM DEBT	2,304.2			—		—			—			2,304.2
LONG-TERM INTERCOMPANY NOTES	242.0			—		—			(242.0		)	—
NON-CURRENT LIABILITIES OF DISCONTINUED OPERATIONS	—			—		52.2			—			52.2
OTHER LIABILITIES	15.7			147.2		0.6			—			163.5
TOTAL LIABILITIES	2,743.5			978.3		(81.6		)	(242.7		)	3,397.5
COMMITMENTS AND CONTINGENCIES
EQUITY
TOTAL CLIFFS SHAREHOLDERS' EQUITY (DEFICIT)	(444.1		)	501.6		552.4			(1,054.2		)	(444.3		)
NONCONTROLLING INTEREST	—			—		0.2			—			0.2
TOTAL DEFICIT	(444.1		)	501.6		552.6			(1,054.2		)	(444.1		)
TOTAL LIABILITIES AND DEFICIT	$	2,299.4		$	1,479.9	$	471.0		$	(1,296.9	)	$	2,953.4

Schedule of Supplemental Statements of Condensed Consolidating Operations and Comprehensive Income (Loss)

Condensed Consolidating Statement of Operations and Comprehensive Income
For the Year Ended December 31, 2018
(In Millions)
	Cleveland-Cliffs Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
REVENUES FROM PRODUCT SALES AND SERVICES
Product	$	—		$	2,172.3		$	—		$	—		$	2,172.3
Freight and venture partners' cost reimbursements	—			160.1			—			—			160.1
	—			2,332.4			—			—			2,332.4
COST OF GOODS SOLD AND OPERATING EXPENSES	—			(1,522.8		)	—			—			(1,522.8		)
SALES MARGIN	—			809.6			—			—			809.6
OTHER OPERATING INCOME (EXPENSE)
Selling, general and administrative expenses	(86.1		)	(30.4		)	(0.3		)	—			(116.8		)
Miscellaneous - net	(0.3		)	(23.6		)	4.3			—			(19.6		)
	(86.4		)	(54.0		)	4.0			—			(136.4		)
OPERATING INCOME (LOSS)	(86.4		)	755.6			4.0			—			673.2
OTHER INCOME (EXPENSE)
Interest expense, net	(117.6		)	(2.1		)	0.8			—			(118.9		)
Loss on extinguishment of debt	(6.8		)	—			—			—			(6.8		)
Other non-operating income (loss)	(3.5		)	0.9			19.8			—			17.2
	(127.9		)	(1.2		)	20.6			—			(108.5		)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(214.3		)	754.4			24.6			—			564.7
INCOME TAX BENEFIT	474.7			—			0.5			—			475.2
EQUITY IN INCOME OF SUBSIDIARIES	858.2			25.5			—			(883.7		)	—
INCOME FROM CONTINUING OPERATIONS	1,118.6			779.9			25.1			(883.7		)	1,039.9
INCOME FROM DISCONTINUED OPERATIONS, net of tax	9.5			12.3			66.4			—			88.2
NET INCOME ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	$	1,128.1		$	792.2		$	91.5		$	(883.7	)	$	1,128.1
OTHER COMPREHENSIVE LOSS	(244.9		)	(24.1		)	(256.7		)	280.8			(244.9		)
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	$	883.2		$	768.1		$	(165.2	)	$	(602.9	)	$	883.2

Condensed Consolidating Statement of Operations and Comprehensive Income
For the Year Ended December 31, 2017
(In Millions)
	Cleveland-Cliffs Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
REVENUES FROM PRODUCT SALES AND SERVICES
Product	$	—		$	1,644.6		$	—		$	—		$	1,644.6
Freight and venture partners' cost reimbursements	—			221.4			—			—			221.4
	—			1,866.0			—			—			1,866.0
COST OF GOODS SOLD AND OPERATING EXPENSES	—			(1,398.4		)	—			—			(1,398.4		)
SALES MARGIN	—			467.6			—			—			467.6
OTHER OPERATING INCOME (EXPENSE)
Selling, general and administrative expenses	(77.2		)	(19.9		)	(5.8		)	—			(102.9		)
Miscellaneous - net	(2.3		)	11.0			16.8			—			25.5
	(79.5		)	(8.9		)	11.0			—			(77.4		)
OPERATING INCOME (LOSS)	(79.5		)	458.7			11.0			—			390.2
OTHER INCOME (EXPENSE)
Interest expense, net	(126.8		)	(1.0		)	1.0			—			(126.8		)
Loss on extinguishment of debt	(165.4		)	—			—			—			(165.4		)
Other non-operating income (expense)	(4.0		)	(3.0		)	17.2			—			10.2
	(296.2		)	(4.0		)	18.2			—			(282.0		)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(375.7		)	454.7			29.2			—			108.2
INCOME TAX BENEFIT (EXPENSE)	251.4			1.3			(0.3		)	—			252.4
EQUITY IN INCOME OF SUBSIDIARIES	512.6			11.8			—			(524.4		)	—
INCOME FROM CONTINUING OPERATIONS	388.3			467.8			28.9			(524.4		)	360.6
INCOME (LOSS) FROM DISCONTINUED OPERATIONS, net of tax	(21.3		)	1.7			22.1			—			2.5
NET INCOME	367.0			469.5			51.0			(524.4		)	363.1
INCOME ATTRIBUTABLE TO NONCONTROLLING INTEREST	—			3.9			—			—			3.9
NET INCOME ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	$	367.0		$	473.4		$	51.0		$	(524.4	)	$	367.0
OTHER COMPREHENSIVE INCOME (LOSS)	(4.0		)	12.9			(4.8		)	(8.1		)	(4.0		)
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	$	363.0		$	486.3		$	46.2		$	(532.5	)	$	363.0

Condensed Consolidating Statement of Operations and Comprehensive Income
For the Year Ended December 31, 2016
(In Millions)
	Cleveland-Cliffs Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
REVENUES FROM PRODUCT SALES AND SERVICES
Product	$	—		$	1,379.7		$	—		$	—		$	1,379.7
Freight and venture partners' cost reimbursements	—			174.8			—			—			174.8
	—			1,554.5			—			—			1,554.5
COST OF GOODS SOLD AND OPERATING EXPENSES	—			(1,274.4		)	—			—			(1,274.4		)
SALES MARGIN	—			280.1			—			—			280.1
OTHER OPERATING INCOME (EXPENSE)
Selling, general and administrative expenses	(94.3		)	(18.0		)	(3.5		)	—			(115.8		)
Miscellaneous - net	(5.6		)	(12.4		)	(15.6		)	—			(33.6		)
	(99.9		)	(30.4		)	(19.1		)	—			(149.4		)
OPERATING INCOME (LOSS)	(99.9		)	249.7			(19.1		)	—			130.7
OTHER INCOME (EXPENSE)
Interest expense, net	(194.5		)	0.1			0.5			—			(193.9		)
Gain on extinguishment/restructuring of debt	166.3			—			—			—			166.3
Other non-operating income (expense)	(4.1		)	(5.0		)	16.4			—			7.3
	(32.3		)	(4.9		)	16.9			—			(20.3		)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(132.2		)	244.8			(2.2		)	—			110.4
INCOME TAX BENEFIT	4.3			3.0			4.9			—			12.2
EQUITY IN INCOME OF SUBSIDIARIES	319.1			13.7			—			(332.8		)	—
INCOME FROM CONTINUING OPERATIONS	191.2			261.5			2.7			(332.8		)	122.6
INCOME (LOSS) FROM DISCONTINUED OPERATIONS, net of tax	(17.1		)	2.6			91.2			—			76.7
NET INCOME (LOSS)	174.1			264.1			93.9			(332.8		)	199.3
INCOME ATTRIBUTABLE TO NONCONTROLLING INTEREST	—			(25.2		)	—			—			(25.2		)
NET INCOME ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	$	174.1		$	238.9		$	93.9		$	(332.8	)	$	174.1
OTHER COMPREHENSIVE INCOME (LOSS)	(3.3		)	(20.7		)	15.4			5.3			(3.3		)
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	$	170.8		$	218.2		$	109.3		$	(327.5	)	$	170.8

Schedule of Supplemental Statements of Condensed Consolidating Cash Flows

Condensed Consolidating Statement of Cash Flows
For the Year Ended December 31, 2018
(In Millions)
	Cleveland-Cliffs Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided (used) by operating activities	$	(120.7	)	$	741.0		$	(141.8	)	$	—		$	478.5
INVESTING ACTIVITIES
Purchase of property, plant and equipment	(1.2		)	(207.3		)	(0.1		)	—			(208.6		)
Deposits for property, plant and equipment	—			(82.3		)	(5.2		)	—			(87.5		)
Intercompany investing	399.1			(7.1		)	120.7			(512.7		)	—
Other investing activities	—			3.1			19.9			—			23.0
Net cash provided (used) in investing activities	397.9			(293.6		)	135.3			(512.7		)	(273.1		)
FINANCING ACTIVITIES
Repurchase of common shares	(47.5		)	—			—			—			(47.5		)
Debt issuance costs	(1.5		)	—			—			—			(1.5		)
Repurchase of debt	(234.5		)	—			—			—			(234.5		)
Distributions of partnership equity	—			(44.2		)	—			—			(44.2		)
Intercompany financing	(120.7		)	(402.4		)	10.4			512.7			—
Other financing activities	(2.1		)	(2.2		)	(43.2		)	—			(47.5		)
Net cash used by financing activities	(406.3		)	(448.8		)	(32.8		)	512.7			(375.2		)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	—			—			(2.3		)	—			(2.3		)
DECREASE IN CASH AND CASH EQUIVALENTS, INCLUDING CASH CLASSIFIED WITHIN CURRENT ASSETS OF DISCONTINUED OPERATIONS	(129.1		)	(1.4		)	(41.6		)	—			(172.1		)
LESS: DECREASE IN CASH AND CASH EQUIVALENTS CLASSIFIED WITHIN CURRENT ASSETS OF DISCONTINUED OPERATIONS	—			—			(17.0		)	—			(17.0		)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(129.1		)	(1.4		)	(24.6		)	—			(155.1		)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	948.9			2.1			27.3			—			978.3
CASH AND CASH EQUIVALENTS AT END OF YEAR	$	819.8		$	0.7		$	2.7		$	—		$	823.2

Condensed Consolidating Statement of Cash Flows
For the Year Ended December 31, 2017
(In Millions)
	Cleveland-Cliffs Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided (used) by operating activities	$	(166.8	)	$	430.0		$	74.9		$	—		$	338.1
INVESTING ACTIVITIES
Purchase of property, plant and equipment	(3.4		)	(79.8		)	(51.7		)	—			(134.9		)
Deposits for property, plant and equipment	—			(11.7		)	(5.1		)	—			(16.8		)
Intercompany investing	225.7			(7.3		)	(45.1		)	(173.3		)	—
Other investing activities	(7.7		)	3.4			—			—			(4.3		)
Net cash provided (used) by investing activities	214.6			(95.4		)	(101.9		)	(173.3		)	(156.0		)
FINANCING ACTIVITIES
Net proceeds from issuance of common shares	661.3			—			—			—			661.3
Proceeds from issuance of debt	1,771.5			—			—			—			1,771.5
Debt issuance costs	(28.6		)	—			—			—			(28.6		)
Repurchase of debt	(1,720.7		)	—			—			—			(1,720.7		)
Acquisition of noncontrolling interest	(105.0		)	—			—			—			(105.0		)
Distributions of partnership equity	—			(52.9		)	—			—			(52.9		)
Intercompany financing	45.0			(277.6		)	59.3			173.3			—
Other financing activities	(5.8		)	(4.5		)	(16.4		)	—			(26.7		)
Net cash provided (used) by financing activities	617.7			(335.0		)	42.9			173.3			498.9
EFFECT OF EXCHANGE RATE CHANGES ON CASH	—			—			3.3			—			3.3
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS, INCLUDING CASH CLASSIFIED WITHIN CURRENT ASSETS OF DISCONTINUED OPERATIONS	665.5			(0.4		)	19.2			—			684.3
LESS: INCREASE IN CASH AND CASH EQUIVALENTS CLASSIFIED WITHIN CURRENT ASSETS OF DISCONTINUED OPERATIONS	—			—			18.8			—			18.8
NET INCREASE IN CASH AND CASH EQUIVALENTS	665.5			(0.4		)	0.4			—			665.5
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	283.4			2.5			26.9			—			312.8
CASH AND CASH EQUIVALENTS AT END OF YEAR	$	948.9		$	2.1		$	27.3		$	—		$	978.3

Condensed Consolidating Statement of Cash Flows
For the Year Ended December 31, 2016
(In Millions)
	Cleveland-Cliffs Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided (used) by operating activities	$	(275.7	)	$	462.9		$	115.8		$	—		$	303.0
INVESTING ACTIVITIES
Purchase of property, plant and equipment	(6.2		)	(55.1		)	(0.4		)	—			(61.7		)
Deposits for property, plant and equipment	—			(4.9		)	(2.5		)	—			(7.4		)
Intercompany investments	356.6			(3.3		)	(117.0		)	(236.3		)	—
Other investing activities	0.4			10.8			—			—			11.2
Net cash provided (used) by investing activities	350.8			(52.5		)	(119.9		)	(236.3		)	(57.9		)
FINANCING ACTIVITIES
Net proceeds from issuance of common shares	287.4			—			—			—			287.4
Debt issuance costs	(5.2		)	—			—			—			(5.2		)
Borrowings under credit facilities	105.0			—			—			—			105.0
Repayments on credit facilities	(105.0		)	—			—			—			(105.0		)
Repayments on equipment loans	(95.6		)	—			—			—			(95.6		)
Repurchase of debt	(305.4		)	—			—			—			(305.4		)
Distributions of partnership equity	—			(59.9		)	—			—			(59.9		)
Intercompany financing	117.0			(339.9		)	(13.4		)	236.3			—
Other financing activities	(0.6		)	(9.9		)	(17.2		)	—			(27.7		)
Net cash used by financing activities	(2.4		)	(409.7		)	(30.6		)	236.3			(206.4		)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	—			—			(0.5		)	—			(0.5		)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS, INCLUDING CASH CLASSIFIED WITHIN CURRENT ASSETS OF DISCONTINUED OPERATIONS	72.7			0.7			(35.2		)	—			38.2
LESS: DECREASE IN CASH AND CASH EQUIVALENTS CLASSIFIED WITHIN CURRENT ASSETS OF DISCONTINUED OPERATIONS	—			—			(35.3		)	—			(35.3		)
NET INCREASE IN CASH AND CASH EQUIVALENTS	72.7			0.7			0.1			—			73.5
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	210.7			1.8			26.8			—			239.3
CASH AND CASH EQUIVALENTS AT END OF YEAR	$	283.4		$	2.5		$	26.9		$	—		$	312.8