星空传媒

Quarterly report pursuant to Section 13 or 15(d)

Commitments And Contingencies (Details)

Commitments And Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended				3 Months Ended	9 Months Ended	12 Months Ended	3 Months Ended
	Mar. 31, 2012 Koolyanobbing [Member]	Dec. 31, 2011 Koolyanobbing [Member]	Dec. 31, 2010 Koolyanobbing [Member] Mg	Mar. 31, 2012 Koolyanobbing Rail Upgrade [Member]	Dec. 31, 2011 Koolyanobbing Rail Upgrade [Member]	Mar. 31, 2012 Koolynobbing Enhancements And Upgrades [Member]	Mar. 31, 2012 Bloom Lake [Member]	Mar. 31, 2012 Lower War Eagle [Member]	Mar. 31, 2012 Empire [Member] T	Mar. 31, 2012 Empire And Tilden [Member]	Dec. 31, 2012 Empire And Tilden [Member]	Dec. 31, 2013 Empire And Tilden [Member]	Mar. 31, 2012 Tilden [Member] T	Mar. 31, 2012 Oak Grove [Member]	Dec. 31, 2011 Initial [Member] Bloom Lake [Member]	Dec. 31, 2011 Current [Member] Bloom Lake [Member]
Related Party Transaction [Line Items]	听	听	听	听	听	听	听	听	听	听	听	听	听	听	听	听
Capital investment required	听	$ 275	听	听	听	听	$ 1,300	听	听	听	听	听	听	听	听	听
Capital investment committed	273	听	听	听	33	听	601	62	听	210	听	听	听	113	听	听
Increase in production capacity, metric tons annually	听	听	听	听	听	听	听	听	听	听	听	听	2,000,000	听	听	听
Gross post-project production capacity, metric tons annually	听	听	11,000,000	听	听	听	听	听	3,000,000	听	听	听	听	听	听	听
Mine production capacity, metric tons per year	听	听	听	听	听	听	听	听	听	听	听	听	听	听	8,000,000	16,000,000
Capital Expenditures related to commitment	225.0	听	听	17.0	听	听	235.0	52.0	听	160.0	听	听	听	听	听	听
Capital investment, future payments	听	听	听	16	听	16	366	10	听	听	39	11	听	听	听	听
Capital investment commitment	听	听	听	听	听	听	听	听	听	$ 264	听	听	听	听	听	听

The cash outflow for acquisition of or capital improvements of property, plant and equipment, used to produce goods or deliver services, and not otherwise defined in the taxonomy.

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