日韩三级片

Quarterly report pursuant to Section 13 or 15(d)

ENVIRONMENTAL AND MINE CLOSURE OBLIGATIONS (Asset Retirement Obligation Disclosure) (Details)

v2.4.0.8
ENVIRONMENTAL AND MINE CLOSURE OBLIGATIONS (Asset Retirement Obligation Disclosure) (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Asset Retirement Obligation [Roll Forward]
Asset retirement obligation at beginning of period $ 231.1 $ 194.9
Accretion expense 9.0 17.6
Exchange rate changes (2.9) 0.3
Revision in estimated cash flows (17.1) 18.2
Payments (0.3) 0.1
Asset retirement obligation at end of period $ 219.8 $ 231.1