Segment Information

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Segment Information

Segment and Geographic Information

The Company reports its operations primarily through the following reportable segments: "Western U.S. Mining," "Midwestern U.S. Mining," "Australian Mining," "Trading and Brokerage" and "Corporate and Other."

The Company's Western U.S. Mining operations reflect the aggregation of the Powder River Basin, Southwest and Colorado mining operations. The mines in that segment are characterized by predominantly surface mining extraction processes, coal with a lower sulfur content and Btu and higher customer transportation costs (due to longer shipping distances). The Company's Midwestern U.S. Mining operations reflect the Company’s Illinois and Indiana mining operations, which are characterized by a mix of surface and underground mining extraction processes, coal with a higher sulfur content and Btu and lower customer transportation costs (due to shorter shipping distances). Geologically, Western operations mine bituminous and sub-bituminous coal deposits, and Midwestern operations mine bituminous coal deposits. The principal business of the Western and Midwestern U.S. Mining segments is the mining, preparation and sale of thermal coal, sold primarily to electric utilities in the U.S., with a portion sold into the seaborne markets.

The Company’s Australian Mining operations consist of its mines in Queensland and New South Wales, Australia. The mines in that segment are characterized by both surface and underground extraction processes, mining various qualities of metallurgical (low-sulfur, high Btu coal) and thermal coal. The metallurgical coal qualities include hard coking coal, semi-hard coking coal, semi-soft coal and pulverized coal injection coal. The business of the Company's Australian Mining operations are primarily export focused with customers spread across several countries, while a portion of the coal is sold within Australia. Generally, revenues from individual countries vary year by year based on the demand for electricity, the demand for steel, the strength of the global economy and several other factors, including those specific to each country.

The Company’s Trading and Brokerage segment brokers coal sales of other coal producers both as principal and agent, and trades coal and freight-related contracts. Corporate and Other, includes selling and administrative expenses, mining and export/transportation joint ventures, restructuring and pension settlement charges and activities associated with the optimization of our coal reserve and real estate holdings, the closure of inactive mining sites and certain energy-related commercial matters.

The Company’s chief operating decision maker uses Adjusted EBITDA as the primary measure of segment profit and loss. Beginning with this report, the Company modified its definition of Adjusted EBITDA to also exclude the impact of changes in deferred tax asset valuation allowance related to equity affiliates because the Company believes that doing so is useful in comparing its 2014 results with those of prior periods. Also beginning in 2014, the Company modified its expense allocation practices to exclude restructuring and pension settlement charges from its Australian Mining, Western U.S. Mining, Midwestern U.S. Mining and Trading and Brokerage segment results because it believes such items do not reflect the core operating performance of those segments. Accordingly, such charges are now entirely reflected in the Corporate and Other segment. Segment results from prior periods have been reclassified to conform to the 2014 presentation. The Company defines Adjusted EBITDA as (loss) income from continuing operations before deducting net interest expense; income taxes; asset retirement obligation expenses, depreciation, depletion and amortization; asset impairment and mine closure costs; charges for the settlement of claims and litigation related to previously divested operations and changes in deferred tax asset valuation allowance and amortization of basis difference related to equity affiliates.

Segment results for the year ended December 31, 2014 were as follows (assets as of December 31, 2014):

	Western U.S. Mining		Midwestern U.S. Mining		Australian Mining		Trading and Brokerage		Corporate and Other			Consolidated
	(Dollars in millions)
Revenues	$	2,825.7	$	1,198.1	$	2,671.8	$	58.4	$	38.2		$	6,792.2
Adjusted EBITDA	770.4		301.4		74.4		14.9		(347.1		)	814.0
Total assets	3,431.3		667.8		6,623.9		300.7		2,167.4			13,191.1
Property, plant, equipment and mine development, net	3,127.8		612.1		5,503.7		1.1		1,332.6			10,577.3
Additions to property, plant, equipment and mine development	37.9		57.4		84.1		—		15.0			194.4
Federal coal lease expenditures	276.7		—		—		—		—			276.7
Loss from equity affiliates	—		—		—		—		107.6			107.6

Segment results for the year ended December 31, 2013 were as follows (assets as of December 31, 2013):

	Western U.S. Mining		Midwestern U.S. Mining		Australian Mining		Trading and Brokerage			Corporate and Other			Consolidated
	(Dollars in millions)
Revenues	$	2,669.6	$	1,335.5	$	2,904.6	$	66.0		$	38.0		$	7,013.7
Adjusted EBITDA	698.3		428.3		316.6		(19.9		)	(376.1		)	1,047.2
Total assets	3,307.6		716.8		7,081.2		389.6			2,638.2			14,133.4
Property, plant, equipment and mine development, net	2,986.8		667.6		5,947.1		1.8			1,479.2			11,082.5
Additions to property, plant, equipment and mine development	48.0		27.2		230.3		0.1			22.8			328.4
Federal coal lease expenditures	276.8		—		—		—			—			276.8
Loss from equity affiliates	—		—		—		—			40.2			40.2

Segment results for the year ended December 31, 2012 were as follows (assets as of December 31, 2012):

	Western U.S. Mining		Midwestern U.S. Mining		Australian Mining		Trading and Brokerage		Corporate and Other			Consolidated
	(Dollars in millions)
Revenues	$	2,949.3	$	1,403.7	$	3,503.6	$	199.9	$	21.0		$	8,077.5
Adjusted EBITDA	832.8		427.0		938.9		119.7		(481.9		)	1,836.5
Total assets	3,257.9		728.5		7,990.8		543.9		3,287.9			15,809.0
Property, plant, equipment and mine development, net	2,896.1		707.5		6,595.5		1.6		1,601.0			11,801.7
Additions to property, plant, equipment and mine development	121.4		74.7		743.4		0.1		46.4			986.0
Federal coal lease expenditures	276.5		—		—		—		—			276.5
Loss from equity affiliates	—		—		—		—		61.2			61.2

A reconciliation of Adjusted EBITDA to consolidated loss from continuing operations, net of income taxes follows:

	Year Ended December 31,
	2014			2013			2012
	(Dollars in millions)
Total Adjusted EBITDA	$	814.0		$	1,047.2		$	1,836.5
Depreciation, depletion and amortization	(655.7		)	(740.3		)	(663.4		)
Asset retirement obligation expenses	(81.0		)	(66.5		)	(67.0		)
Asset impairment and mine closure costs	(154.4		)	(528.3		)	(929.0		)
Settlement charges related to the Patriot bankruptcy reorganization	—			(30.6		)	—
Change in deferred tax asset valuation allowance related to equity affiliates	(52.3		)	—			—
Amortization of basis difference related to equity affiliates	(5.7		)	(6.3		)	(4.6		)
Interest expense	(428.2		)	(425.2		)	(405.6		)
Interest income	15.4			15.7			24.5
Income tax (provision) benefit	(201.2		)	448.3			(262.3		)
Loss from continuing operations, net of income taxes	$	(749.1	)	$	(286.0	)	$	(470.9	)

The following table presents revenues as a percent of total revenue from external customers by geographic region:

	Year Ended December 31,
	2014		2013		2012
U.S.	59.5	%	61.1	%	55.4	%
Japan	9.5	%	9.8	%	12.3	%
China	6.1	%	10.2	%	6.8	%
South Korea	5.2	%	3.8	%	5.8	%
Other	19.7	%	15.1	%	19.7	%
Total	100.0	%	100.0	%	100.0	%

The Company attributes revenue to individual countries based on the location of the physical delivery of the coal.