Asset Impairment (Tables)

6 Months Ended

Jun. 30, 2016

Asset Impairment Charges [Abstract]

Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block]

The following costs are reflected in "Asset impairment" in the unaudited condensed consolidated statement of operations for the three and six months ended June 30, 2015:

	Reportable Segment
	Australian Metallurgical Mining		Australian Thermal Mining		Corporate and Other		Consolidated
	(Dollars in millions)
Asset impairment charges:
Long-lived assets	$	527.0	$	8.2	$	182.2	$	717.4
Equity method investments	—		—		183.4		183.4
Total	$	527.0	$	8.2	$	365.6	$	900.8