Cleveland-Cliffs Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Accumulated Other Comprehensive Income (Loss) (Details)

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	$ (291.1)	$ (204.9)	$ (382.7)	$ (291.1)	$ (188.3)	$ (199.4)	$ (202.0)	$ (204.9)	$ (365.1)	$ (370.8)	$ (377.4)	$ (408.9)
Accumulated other comprehensive loss	(245.8)	(112.9)	(55.6)	(245.8)	(101.4)	(20.2)	(55.1)	(112.9)	(178.4)	(239.6)	(51.4)	(92.6)
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(1.0)	6.2	2.1	(1.0)	0.6	6.4	10.1	6.2	10.7	6.3	4.7	2.6
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	64.4	106.7	316.3	64.4	101.0	166.9	147.2	106.7	190.4	167.6	319.6	312.5
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(18.1)	(20.9)	8.7	(18.1)	(14.7)	5.9	(10.4)	(20.9)	(14.4)	(42.7)	1.7	1.2
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	91.0	(208.3)	(33.8)
Unrealized net gain (loss) on marketable securities, net of tax	(7.2)	3.1	(0.5)
Unrealized net gain (loss) on foreign currency translation	(42.3)	(208.6)	3.8
Other Comprehensive Income (Loss), Net of Tax	(137.7)	(26.8)	44.6
Accumulated Other Comprehensive Income (Loss) [Member]
Other Comprehensive Income (Loss), before Reclassifications, before Tax				(152.3)	(81.1)	25.6	41.6	49.3	37.8	(197.7)	(0.3)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)				7.9	(0.1)	9.3	16.2	16.2	23.4	9.5	4.5
Accumulated Defined Benefit Plans Adjustment [Member]
Other Comprehensive Income (Loss), before Reclassifications, before Tax				(98.7)	3.5	(1.4)	(0.4)	154.5	(0.6)	(1.5)	(1.1)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Other Comprehensive Income (Loss), before Reclassifications, before Tax				(1.4)	1.3	(2.4)	3.8	(4.9)	3.5	(2.0)	2.5
Accumulated Translation Adjustment [Member]
Other Comprehensive Income (Loss), before Reclassifications, before Tax				(36.6)	(65.9)	19.7	40.5	(83.7)	22.8	(152.0)	3.3
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Other Comprehensive Income (Loss), before Reclassifications, before Tax				(15.6)	(20.0)	9.7	(2.3)	(16.6)	12.1	(42.2)	(5.0)
Accumulated Defined Benefit Plans Adjustment [Member]
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)				(4.1)	7.6	4.0	3.3	5.7	6.3	8.1	6.4
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)				(0.2)	(7.1)	(1.3)	0.1	0.4	0.9	3.6	0.1
Accumulated Translation Adjustment [Member]
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)				0	0	0	0	0	0	0	0
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)				12.2	(0.6)	6.6	12.8	10.1	16.2	(2.2)	(2.0)
Cliffs Shareholders Equity [Member]
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax			26.2
Unrealized net gain (loss) on marketable securities, net of tax			(0.5)
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax			3.8
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax			7.5
Other Comprehensive Income (Loss), Net of Tax			$ 37.0