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Annual report pursuant to Section 13 and 15(d)

INCOME TAXES INCOME TAXES (Schedule of Effective Rate Reconciliation) (Details)

v3.6.0.2
INCOME TAXES INCOME TAXES (Schedule of Effective Rate Reconciliation) (Details) - USD ($)
AUD / $ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2014
Dec. 31, 2014
Income Tax Contingency [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount $ 72.5 Ìý Ìý $ 109.6 Ìý Ìý $ (6.9) Ìý Ìý
Effective Income Tax Rate Reconciliation, Percent Ìý 35.00% Ìý Ìý 35.00% Ìý Ìý 35.00% Ìý
Non-taxable loss (income) related to noncontrolling interests (8.8) Ìý Ìý (3.0) Ìý Ìý (9.4) Ìý Ìý
Non-taxable loss (income) related to noncontrolling interests percent Ìý (4.20%) Ìý Ìý (1.00%) Ìý Ìý 47.70% Ìý
Impact Of Tax Law Change 149.1 Ìý Ìý 0.0 Ìý Ìý 13.0 Ìý Ìý
Impact Of Tax Law Change Percent Ìý 72.00% Ìý Ìý 0.00% Ìý Ìý (66.00%) Ìý
Income Tax Reconciliation Tax Deduction for percentage depletion in excess of cost depletion (36.1) Ìý Ìý (34.9) Ìý Ìý (87.9) Ìý Ìý
Income Tax Reconciliation Tax Deduction for percentage depletion in excess of cost depletion percent Ìý (17.40%) Ìý Ìý (11.10%) Ìý Ìý 446.20% Ìý
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount (42.7) Ìý Ìý (53.9) Ìý Ìý 51.4 Ìý Ìý
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Ìý (20.60%) Ìý Ìý (17.20%) Ìý Ìý (260.90%) Ìý
Income not subject to tax 0.0 Ìý Ìý 0.0 Ìý Ìý (27.7) Ìý Ìý
Income not subject to tax percent Ìý 0.00% Ìý Ìý 0.00% Ìý Ìý 140.60% Ìý
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount 0.0 Ìý Ìý 0.0 Ìý Ìý 22.7 Ìý Ìý
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Percent Ìý 0.00% Ìý Ìý 0.00% Ìý Ìý (115.20%) Ìý
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount 0.4 Ìý Ìý 0.2 Ìý Ìý (25.4) Ìý Ìý
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Ìý 0.20% Ìý Ìý 0.10% Ìý Ìý 128.90% Ìý
Effective Income Tax Rate Reconciliation, Tax Settlement, Amount 0.0 Ìý Ìý 0.0 Ìý Ìý (347.1) Ìý Ìý
Effective Income Tax Rate Reconciliation, Tax Settlement, Percent Ìý 0.00% Ìý Ìý 0.00% Ìý Ìý 1761.90% Ìý
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount 93.9 Ìý Ìý (104.6) Ìý Ìý 318.3 Ìý Ìý
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Ìý 45.40% Ìý Ìý (33.40%) Ìý Ìý (1615.70%) Ìý
Effective Income Tax Reconciliation, Valuation Allowance Prior Year (142.6) Ìý Ìý 165.8 Ìý Ìý 15.2 Ìý Ìý
Effective Income Tax Reconciliation, Valuation Allowance Prior Year, Percent Ìý (68.90%) Ìý Ìý 52.90% Ìý Ìý (77.20%) Ìý
Tax Adjustments, Settlements, and Unusual Provisions (11.3) Ìý Ìý 84.1 Ìý Ìý 0.0 Ìý Ìý
Tax Adjustments Settlements And Unusual Provisions Percent Ìý (5.50%) Ìý Ìý 26.90% Ìý Ìý 0.00% Ìý
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Percent Ìý (5.70%) (1180.00%) Ìý 1.90% 590.00% Ìý 32.10% (630.00%)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount (1.4) Ìý Ìý 0.1 Ìý Ìý 4.1 Ìý Ìý
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Ìý (0.70%) Ìý Ìý 0.00% Ìý Ìý (20.90%) Ìý
Income Tax Expense (Benefit) (12.2) Ìý Ìý 169.3 Ìý Ìý (86.0) Ìý Ìý
Income Tax Expense Benefit Percent Ìý (5.90%) Ìý Ìý 54.10% Ìý Ìý 436.50% Ìý
Worthless Stock Deduction, Amount $ (73.4) Ìý Ìý $ 0.0 Ìý Ìý $ 0.0 Ìý Ìý
Worthless Stock Deduction, Percent Ìý (35.50%) Ìý Ìý 0.00% Ìý Ìý 0.00% Ìý