XML 111 R65.htm IDEA: XBRL DOCUMENT v2.4.0.6
Deferred Income and Mining Tax Liabilities and Assets (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Deferred income and mining tax liabilities    
Mining assets $ 1,608.0 $ 1,803.8
Investments held by environmental trust funds 45.3 77.3
Inventory 15.3 9.3
Other 13.1 45.8
Gross deferred income and mining tax liabilities 1,681.7 1,936.2
Provisions, including rehabilitation accruals (144.6) (149.0)
Tax losses (183.0) (278.1)
Unredeemed capital expenditure (782.9) (630.0)
Other   (3.7)
Gross deferred income and mining tax assets (1,110.5) (1,060.8)
Valuation allowance for deferred tax assets 324.4 152.4
Total deferred income and mining tax assets (786.1) (908.4)
Total deferred income and mining tax liabilities 895.6 1,027.8
Less: short term portion of deferred income and mining tax (included in accounts payable and provisions) (17.9) (8.4)
Long-term portion of deferred income and mining tax liabilities 877.7 1,019.4
Long-term liabilities (901.8) (1,019.4)
Long-term assets $ 24.1