Revenues (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of Accounts Receivable [Table Text Block]

Accounts receivable, net” at June 30, 2018 and December 31, 2017 consisted of the following:



	June 30, 2018		December 31, 2017
	(Dollars in millions)
Trade receivables, net	$	412.7	$	504.2
Miscellaneous receivables, net	90.3		47.9
Accounts receivable, net	$	503.0	$	552.1

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

With respect to its Australian 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
	Three Months Ended June 30, 2018
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Australian Metallurgical Mining		Australian Thermal Mining		Trading and Brokerage		Corporate and Other ⁽¹⁾			Consolidated
	(Dollars in millions)
Thermal coal
Domestic	$	321.5	$	196.9	$	131.1	$	—	$	38.5	$	—	$	—		$	688.0
Export	—		0.6		4.3		—		228.7		—		—			233.6
Total thermal	321.5		197.5		135.4		—		267.2		—		—			921.6
Metallurgical coal
Export	—		—		—		417.2		—		—		—			417.2
Total metallurgical	—		—		—		417.2		—		—		—			417.2
Other	—		—		4.2		0.3		0.2		10.0		(44.1		)	(29.4		)
Total revenues	$	321.5	$	197.5	$	139.6	$	417.5	$	267.4	$	10.0	$	(44.1	)	$	1,309.4

	Successor
	April 2 through June 30, 2017
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Australian Metallurgical Mining		Australian Thermal Mining		Trading and Brokerage		Corporate and Other ⁽¹⁾			Consolidated
	(Dollars in millions)
Thermal coal
Domestic	$	361.1	$	194.8	$	123.8	$	—	$	28.1	$	—	$	—		$	707.8
Export	—		—		—		—		210.9		—		—			210.9
Total thermal	361.1		194.8		123.8		—		239.0		—		—			918.7
Metallurgical coal
Export	—		—		—		287.8		—		—		—			287.8
Total metallurgical	—		—		—		287.8		—		—		—			287.8
Other	4.3		0.1		1.6		—		0.2		5.2		40.4			51.8
Total revenues	$	365.4	$	194.9	$	125.4	$	287.8	$	239.2	$	5.2	$	40.4		$	1,258.3



	Successor
	Six Months Ended June 30, 2018
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Australian Metallurgical Mining		Australian Thermal Mining		Trading and Brokerage		Corporate and Other ⁽¹⁾			Consolidated
	(Dollars in millions)
Thermal coal
Domestic	$	710.7	$	397.8	$	261.4	$	—	$	74.6	$	—	$	—		$	1,444.5
Export	—		1.3		12.3		—		393.6		—		—			407.2
Total thermal	710.7		399.1		273.7		—		468.2		—		—			1,851.7
Metallurgical coal
Export	—		—		—		882.5		—		—		—			882.5
Total metallurgical	—		—		—		882.5		—		—		—			882.5
Other	0.1		0.1		9.6		1.2		0.6		30.1		(3.8		)	37.9
Total revenues	$	710.8	$	399.2	$	283.3	$	883.7	$	468.8	$	30.1	$	(3.8	)	$	2,772.1

	Predecessor
	January 1 through April 1, 2017
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Australian Metallurgical Mining		Australian Thermal Mining		Trading and Brokerage		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		15.0		20.3			56.1
Total revenues	$	394.3	$	193.2	$	149.7	$	328.9	$	224.8	$	15.0	$	20.3		$	1,326.2

Disaggregation of Revenue by Contract Duration [Table Text Block]

Revenue by contract duration was as follows:



	Successor
	Three Months Ended June 30, 2018
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Australian Metallurgical Mining		Australian Thermal Mining		Trading and Brokerage		Corporate and Other ⁽¹⁾			Consolidated
	(Dollars in millions)
One year or longer	$	310.8	$	194.1	$	126.5	$	255.1	$	173.2	$	—	$	—		$	1,059.7
Less than one year	10.7		3.4		8.9		162.1		94.0		—		—			279.1
Other	—		—		4.2		0.3		0.2		10.0		(44.1		)	(29.4		)
Total revenues	$	321.5	$	197.5	$	139.6	$	417.5	$	267.4	$	10.0	$	(44.1	)	$	1,309.4

	Successor
	April 2 through June 30, 2017
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Australian Metallurgical Mining		Australian Thermal Mining		Trading and Brokerage		Corporate and Other ⁽¹⁾			Consolidated
	(Dollars in millions)
One year or longer	$	326.7	$	187.3	$	122.7	$	253.4	$	135.6	$	—	$	—		$	1,025.7
Less than one year	34.4		7.5		1.1		34.4		103.4		—		—			180.8
Other	4.3		0.1		1.6		—		0.2		5.2		40.4			51.8
Total revenues	$	365.4	$	194.9	$	125.4	$	287.8	$	239.2	$	5.2	$	40.4		$	1,258.3



	Successor
	Six Months Ended June 30, 2018
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Australian Metallurgical Mining		Australian Thermal Mining		Trading and Brokerage		Corporate and Other ⁽¹⁾			Consolidated
	(Dollars in millions)
One year or longer	$	654.2	$	381.7	$	253.8	$	652.6	$	350.5	$	—	$	—		$	2,292.8
Less than one year	56.5		17.4		19.9		229.9		117.7		—		—			441.4
Other	0.1		0.1		9.6		1.2		0.6		30.1		(3.8		)	37.9
Total revenues	$	710.8	$	399.2	$	283.3	$	883.7	$	468.8	$	30.1	$	(3.8	)	$	2,772.1

	Predecessor
	January 1 through April 1, 2017
	Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Australian Metallurgical Mining		Australian Thermal Mining		Trading and Brokerage		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	—		—		16.2		4.3		0.3		15.0		20.3			56.1
Total revenues	$	394.3	$	193.2	$	149.7	$	328.9	$	224.8	$	15.0	$	20.3		$	1,326.2