CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
OPERATING ACTIVITIES
Net loss	$ (19.2)	$ (14.8)	$ (18.3)	$ (13.7)
Items not affecting cash:
Change in fair value of common stock purchase warrants	0	(1.9)	0	(1.8)
Depreciation, depletion and amortization	17.5	11.5	30.3	31.1
Accretion expense	0.6	0.6	1.4	1.1
Amortization of finance fees	0	0.5	0	1.2
Stock-based compensation	1.9	1.8	3.3	3.3
Product inventory write downs	6.9	12.6	11.6	20.9
Deferred income tax benefit	(3.6)	(11.4)	(10.3)	(22.7)
Unrealized loss on derivative instruments	0	0.5	0	2.1
Unrealized foreign exchange loss (gain)	34.7	3.7	54.3	(1.4)
Change in working capital accounts (Note 16)	6.4	(23.5)	(11.8)	(37.4)
Cash generated by (used in) operating activities	45.2	(20.4)	60.5	(17.3)
INVESTING ACTIVITIES
Capital expenditures	(119.5)	(193.3)	(274.6)	(381.2)
Capitalized interest payments	(27.5)	(13.1)	(35.4)	(13.1)
Restricted cash	(0.2)	9.2	11.2	11.9
Disposition of assets	0.2	0	0.2	0
Reclamation refunds	0.2	19.1	0	24.3
Cash used by investing activities	(146.8)	(178.1)	(298.6)	(358.1)
FINANCING ACTIVITIES
Proceeds from the Gold Stream Arrangement	37.0	45.0	99.0	90.0
Proceeds from senior unsecured note issuance	0	200.0	0	200.0
Proceeds from tangible equity units	0	220.0	0	220.0
Proceeds from sales leaseback transactions	10.5	0	37.8	0
Down payments on capital lease transactions	(1.9)	(0.4)	(4.6)	(0.4)
Repayments of sale leaseback obligations	(3.1)	0	(4.1)	0
Repayments of capital lease obligations	(1.5)	(0.8)	(4.0)	(0.8)
Repayments of long-term debt	(4.3)	(0.7)	(8.2)	(2.2)
Issuance costs related to equity portion of tangible equity units	0	6.4	0	6.4
Debt issuance costs	0	(8.2)	0	(8.2)
(Costs) proceeds from issuance of common shares, net	(0.2)	(1.4)	0.2	(0.9)
Cash generated by financing activities	36.5	447.1	116.1	491.1
EFFECT OF EXCHANGE RATE CHANGES ON CASH	(1.4)	(1.8)	(2.0)	(0.7)
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(66.5)	246.8	(124.0)	115.0
Cash and cash equivalents, beginning of period	469.3	162.7	526.8	294.5
Cash and cash equivalents, end of period	$ 402.8	$ 409.5	$ 402.8	$ 409.5