Revenues (Tables)

12 Months Ended

Dec. 31, 2018

Disaggregation of Revenue by Product Type and Market [Table Text Block]

Revenue by product type and market is set forth in the following tables. With respect to its seaborne mining segments, the Company classifies as “Export” certain revenue from domestically-delivered coal under contracts in which the price is derived on a basis similar to export contracts.



	Successor
	Year Ended December 31, 2018
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Seaborne Metallurgical Mining		Seaborne Thermal Mining		Corporate and Other ⁽¹⁾		Consolidated
	(Dollars in millions)
Thermal coal
Domestic	$	1,424.8	$	799.4	$	543.1	$	—	$	153.0	$	—	$	2,920.3
Export	—		1.3		22.1		—		945.0		—		968.4
Total thermal	1,424.8		800.7		565.2		—		1,098.0		—		3,888.7
Metallurgical coal
Export	—		—		—		1,548.6		—		—		1,548.6
Total metallurgical	—		—		—		1,548.6		—		—		1,548.6
Other	—		0.3		26.8		4.4		1.2		111.8		144.5
Total revenues	$	1,424.8	$	801.0	$	592.0	$	1,553.0	$	1,099.2	$	111.8	$	5,581.8

	Successor
	April 2 through December 31, 2017
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Seaborne Metallurgical Mining		Seaborne Thermal Mining		Corporate and Other ⁽¹⁾		Consolidated
	(Dollars in millions)
Thermal coal
Domestic	$	1,174.3	$	586.7	$	409.8	$	—	$	87.9	$	—	$	2,258.7
Export	—		5.3		19.2		—		684.1		—		708.6
Total thermal	1,174.3		592.0		429.0		—		772.0		—		2,967.3
Metallurgical coal
Export	—		—		—		1,221.0		—		—		1,221.0
Total metallurgical	—		—		—		1,221.0		—		—		1,221.0
Other	4.4		0.3		11.7		—		0.5		47.4		64.3
Total revenues	$	1,178.7	$	592.3	$	440.7	$	1,221.0	$	772.5	$	47.4	$	4,252.6



	Predecessor
	January 1 through April 1, 2017
	Powder River Basin Mining		Midwestern U.S. Mining			Western U.S. Mining		Seaborne Metallurgical Mining		Seaborne Thermal Mining		Corporate and Other ⁽¹⁾		Consolidated
	(Dollars in millions)
Thermal coal
Domestic	$	394.3	$	193.2		$	133.5	$	—	$	27.3	$	—	$	748.3
Export	—		—			—		—		197.2		—		197.2
Total thermal	394.3		193.2			133.5		—		224.5		—		945.5
Metallurgical coal
Export	—		—			—		324.6		—		—		324.6
Total metallurgical	—		—			—		324.6		—		—		324.6
Other	—		—			16.2		4.3		0.3		35.3		56.1
Total revenues	$	394.3	$	193.2		$	149.7	$	328.9	$	224.8	$	35.3	$	1,326.2

	Predecessor
	Year Ended December 31, 2016
	Powder River Basin Mining		Midwestern U.S. Mining			Western U.S. Mining		Seaborne Metallurgical Mining		Seaborne Thermal Mining		Corporate and Other ⁽¹⁾		Consolidated
	(Dollars in millions)
Thermal coal
Domestic	$	1,472.5	$	793.4		$	516.1	$	—	$	108.1	$	—	$	2,890.1
Export	—		—			—		—		715.3		—		715.3
Total thermal	1,472.5		793.4			516.1		—		823.4		—		3,605.4
Metallurgical coal
Export	—		—			—		1,089.6		—		—		1,089.6
Total metallurgical	—		—			—		1,089.6		—		—		1,089.6
Other	0.8		(0.9		)	9.9		0.8		1.5		8.2		20.3
Total revenues	$	1,473.3	$	792.5		$	526.0	$	1,090.4	$	824.9	$	8.2	$	4,715.3

Disaggregation of Revenue by Contract Duration [Table Text Block]

Revenue by contract duration was as follows:



	Successor
	Year Ended December 31, 2018
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Seaborne Metallurgical Mining		Seaborne Thermal Mining		Corporate and Other ⁽¹⁾		Consolidated
	(Dollars in millions)
One year or longer	$	1,283.9	$	775.4	$	531.8	$	1,036.7	$	799.5	$	—	$	4,427.3
Less than one year	140.9		25.3		33.4		511.9		298.5		—		1,010.0
Other ⁽²⁾	—		0.3		26.8		4.4		1.2		111.8		144.5
Total revenues	$	1,424.8	$	801.0	$	592.0	$	1,553.0	$	1,099.2	$	111.8	$	5,581.8



	Successor
	April 2 through December 31, 2017
	Powder River Basin Mining		Midwestern U.S. Mining			Western U.S. Mining		Seaborne Metallurgical Mining		Seaborne Thermal Mining		Corporate and Other ⁽¹⁾		Consolidated
	(Dollars in millions)
One year or longer	$	1,023.1	$	560.5		$	404.6	$	867.1	$	503.0	$	—	$	3,358.3
Less than one year	151.2		31.5			24.4		353.9		269.0		—		830.0
Other ⁽²⁾	4.4		0.3			11.7		—		0.5		47.4		64.3
Total revenues	$	1,178.7	$	592.3		$	440.7	$	1,221.0	$	772.5	$	47.4	$	4,252.6

	Predecessor
	January 1 through April 1, 2017
	Powder River Basin Mining		Midwestern U.S. Mining			Western U.S. Mining		Seaborne Metallurgical Mining		Seaborne Thermal Mining		Corporate and Other ⁽¹⁾		Consolidated
	(Dollars in millions)
One year or longer	$	357.7	$	193.2		$	129.3	$	240.6	$	134.1	$	—	$	1,054.9
Less than one year	36.6		—			4.2		84.0		90.4		—		215.2
Other ⁽²⁾	—		—			16.2		4.3		0.3		35.3		56.1
Total revenues	$	394.3	$	193.2		$	149.7	$	328.9	$	224.8	$	35.3	$	1,326.2

	Predecessor
	Year Ended December 31, 2016
	Powder River Basin Mining		Midwestern U.S. Mining			Western U.S. Mining		Seaborne Metallurgical Mining		Seaborne Thermal Mining		Corporate and Other ⁽¹⁾		Consolidated
	(Dollars in millions)
One year or longer	$	1,364.0	$	791.8		$	478.8	$	686.1	$	464.2	$	—	$	3,784.9
Less than one year	108.5		1.6			37.3		403.5		359.2		—		910.1
Other ⁽²⁾	0.8		(0.9		)	9.9		0.8		1.5		8.2		20.3
Total revenues	$	1,473.3	$	792.5		$	526.0	$	1,090.4	$	824.9	$	8.2	$	4,715.3


⁽¹⁾	Corporate and Other revenue includes realized and unrealized gains and losses related to mark-to-market activity from economic hedge activities intended to hedge future coal sales. Refer to Note 9. “Derivatives and Fair Value Measurements” for additional information regarding the economic hedge activities.


⁽²⁾	Other includes revenues from arrangements such as customer contract-related payments, royalties related to coal lease agreements, sales agency commissions, farm income and property and facility rentals, for which contract duration is not meaningful.

Schedule of Accounts Receivable [Table Text Block]

“Accounts receivable, net” at December 31, 2018 and 2017 consisted of the following:



	December 31, 2018		December 31, 2017
	(Dollars in millions)
Trade receivables, net	$	345.5	$	504.2
Miscellaneous receivables, net	104.9		47.9
Accounts receivable, net	$	450.4	$	552.1