Segment and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2018

Segment results for the year ended December 31, 2018 were as follows:



	Successor
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Seaborne Metallurgical Mining		Seaborne Thermal Mining		Corporate and Other			Consolidated
	(Dollars in millions)
Revenues	$	1,424.8	$	801.0	$	592.0	$	1,553.0	$	1,099.2	$	111.8		$	5,581.8
Adjusted EBITDA	284.5		145.2		145.4		441.4		452.0		(89.2		)	1,379.3
Additions to property, plant, equipment and mine development	81.0		46.6		13.9		88.7		66.6		4.2			301.0
Federal coal lease expenditures	—		—		0.5		—		—		—			0.5
Income from equity affiliates	—		—		—		—		—		(68.1		)	(68.1		)

Segment results for the period April 2 through December 31, 2017 were as follows:



	Successor
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Seaborne Metallurgical Mining		Seaborne Thermal Mining		Corporate and Other			Consolidated
	(Dollars in millions)
Revenues	$	1,178.7	$	592.3	$	440.7	$	1,221.0	$	772.5	$	47.4		$	4,252.6
Adjusted EBITDA	278.8		124.4		131.8		414.9		306.6		(111.2		)	1,145.3
Additions to property, plant, equipment and mine development	32.6		21.7		13.8		56.0		39.2		3.3			166.6
Income from equity affiliates	—		—		—		—		—		(49.0		)	(49.0		)

Segment results for the period January 1 through April 1, 2017 were as follows:



	Predecessor
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Seaborne Metallurgical Mining		Seaborne Thermal Mining		Corporate and Other			Consolidated
	(Dollars in millions)
Revenues	$	394.3	$	193.2	$	149.7	$	328.9	$	224.8	$	35.3		$	1,326.2
Adjusted EBITDA	91.7		50.0		50.0		109.6		75.6		(35.6		)	341.3
Additions to property, plant, equipment and mine development	19.3		2.8		3.1		5.2		2.3		0.1			32.8
Federal coal lease expenditures	—		—		0.5		—		—		—			0.5
Income from equity affiliates	—		—		—		—		—		(15.0		)	(15.0		)

Segment results for the year ended December 31, 2016 were as follows:



	Predecessor
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Seaborne Metallurgical Mining			Seaborne Thermal Mining		Corporate and Other			Consolidated
	(Dollars in millions)
Revenues	$	1,473.3	$	792.5	$	526.0	$	1,090.4		$	824.9	$	8.2		$	4,715.3
Adjusted EBITDA	379.9		217.3		101.6		(16.3		)	217.6		(368.1		)	532.0
Additions to property, plant, equipment and mine development	33.0		18.7		20.8		29.9			22.1		2.1			126.6
Federal coal lease expenditures	248.4		—		0.6		—			—		—			249.0
Income from equity affiliates	—		—		—		—			—		(16.2		)	(16.2		)

Assets as of December 31, 2018 were as follows:



	Successor
	U.S. Thermal Mining		Seaborne Mining		Corporate and Other		Consolidated
	(Dollars in millions)
Total assets	$	3,481.7	$	2,044.6	$	1,897.4	$	7,423.7
Property, plant, equipment and mine development, net	3,180.4		1,661.3		365.3		5,207.0

Assets as of December 31, 2017 were as follows:



	Successor
	U.S. Thermal Mining		Seaborne Mining		Corporate and Other		Consolidated
	(Dollars in millions)
Total assets	$	3,846.5	$	2,339.6	$	1,995.1	$	8,181.2
Property, plant, equipment and mine development, net	3,361.0		1,501.7		249.2		5,111.9

Assets as of December 31, 2016 were as follows:



	Predecessor
	U.S. Thermal Mining		Seaborne Mining		Corporate and Other		Consolidated
	(Dollars in millions)
Total assets	$	4,255.9	$	5,402.2	$	2,119.6	$	11,777.7
Property, plant, equipment and mine development, net	3,970.6		3,905.8		900.3		8,776.7

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



	Successor						Predecessor
	Year Ended December 31, 2018			April 2 through December 31, 2017			January 1 through April 1, 2017			Year Ended December 31, 2016
	(Dollars in millions)
Income (loss) from continuing operations, net of income taxes	$	645.7		$	713.1		$	(195.5	)	$	(663.8	)
Depreciation, depletion and amortization	679.0			521.6			119.9			465.4
Asset retirement obligation expenses	53.0			41.2			14.6			41.8
Selling and administrative expenses related to debt restructuring	—			—			—			21.5
Asset impairment	—			—			30.5			247.9
Provision for North Goonyella equipment loss	66.4			—			—			—
Changes in deferred tax asset valuation allowance and reserves and amortization of basis difference related to equity affiliates	(18.3		)	(17.3		)	(5.2		)	(7.5		)
Interest expense	149.3			119.7			32.9			298.6
Loss on early debt extinguishment	2.0			20.9			—			29.5
Interest income	(33.6		)	(5.6		)	(2.7		)	(5.7		)
Net mark-to-market adjustment on actuarially determined liabilities	(125.5		)	(45.2		)	—			—
Reorganization items, net	(12.8		)	—			627.2			159.0
Gain on disposal of reclamation liability	—			(31.2		)	—			—
Gain on disposal of Burton Mine assets	—			(52.2		)	—			—
Break fees related to terminated asset sales	—			(28.0		)	—			—
Unrealized (gains) losses on economic hedges	(18.3		)	23.0			(16.6		)	39.8
Unrealized losses on non-coal trading derivative contracts	0.7			1.5			—			—
Fresh start coal inventory revaluation	—			67.3			—			—
Fresh start take-or-pay contract-based intangible recognition	(26.7		)	(22.5		)	—			—
Income tax provision (benefit)	18.4			(161.0		)	(263.8		)	(94.5		)
Total Adjusted EBITDA	$	1,379.3		$	1,145.3		$	341.3		$	532.0

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