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Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2019

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

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.



	Three Months Ended September 30, 2019
	Seaborne Thermal Mining		Seaborne Metallurgical Mining		Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Corporate and Other ⁽¹⁾			Consolidated
	(Dollars in millions)
Thermal coal
Domestic	$	34.8	$	—	$	333.6	$	175.8	$	143.6	$	—		$	687.8
Export	214.6		—		—		—		—		—			214.6
Total thermal	249.4		—		333.6		175.8		143.6		—			902.4
Metallurgical coal
Export	—		215.4		—		—		—		—			215.4
Total metallurgical	—		215.4		—		—		—		—			215.4
Other	0.1		0.9		—		0.2		6.8		(19.4		)	(11.4		)
Revenues	$	249.5	$	216.3	$	333.6	$	176.0	$	150.4	$	(19.4	)	$	1,106.4



	Three Months Ended September 30, 2018
	Seaborne Thermal Mining		Seaborne Metallurgical Mining		Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Corporate and Other ⁽¹⁾			Consolidated
	(Dollars in millions)
Thermal coal
Domestic	$	37.4	$	—	$	373.7	$	208.4	$	149.5	$	—		$	769.0
Export	267.7		—		—		—		3.1		—			270.8
Total thermal	305.1		—		373.7		208.4		152.6		—			1,039.8
Metallurgical coal
Export	—		369.4		—		—		—		—			369.4
Total metallurgical	—		369.4		—		—		—		—			369.4
Other	—		0.9		—		0.1		3.5		(1.1		)	3.4
Revenues	$	305.1	$	370.3	$	373.7	$	208.5	$	156.1	$	(1.1	)	$	1,412.6



	Nine Months Ended September 30, 2019
	Seaborne Thermal Mining		Seaborne Metallurgical Mining		Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Corporate and Other ⁽¹⁾		Consolidated
	(Dollars in millions)
Thermal coal
Domestic	$	110.9	$	—	$	903.4	$	522.3	$	417.0	$	—	$	1,953.6
Export	608.7		—		—		—		11.3		—		620.0
Total thermal	719.6		—		903.4		522.3		428.3		—		2,573.6
Metallurgical coal
Export	—		829.4		—		—		—		—		829.4
Total metallurgical	—		829.4		—		—		—		—		829.4
Other	1.1		2.3		0.1		0.3		19.9		79.3		103.0
Revenues	$	720.7	$	831.7	$	903.5	$	522.6	$	448.2	$	79.3	$	3,506.0



	Nine Months Ended September 30, 2018
	Seaborne Thermal Mining		Seaborne Metallurgical Mining		Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Corporate and Other ⁽¹⁾		Consolidated
	(Dollars in millions)
Thermal coal
Domestic	$	112.0	$	—	$	1,084.4	$	606.2	$	410.9	$	—	$	2,213.5
Export	661.3		—		—		1.3		15.4		—		678.0
Total thermal	773.3		—		1,084.4		607.5		426.3		—		2,891.5
Metallurgical coal
Export	—		1,251.9		—		—		—		—		1,251.9
Total metallurgical	—		1,251.9		—		—		—		—		1,251.9
Other	0.6		2.1		0.1		0.2		13.1		25.2		41.3
Revenues	$	773.9	$	1,254.0	$	1,084.5	$	607.7	$	439.4	$	25.2	$	4,184.7

Disaggregation of Revenue by Contract Duration [Table Text Block]

Revenue by initial contract duration was as follows:



	Three Months Ended September 30, 2019
	Seaborne Thermal Mining		Seaborne Metallurgical Mining		Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Corporate and Other ⁽¹⁾			Consolidated
	(Dollars in millions)
One year or longer	$	158.5	$	193.3	$	287.8	$	171.6	$	143.6	$	—		$	954.8
Less than one year	90.9		22.1		45.8		4.2		—		—			163.0
Other ⁽²⁾	0.1		0.9		—		0.2		6.8		(19.4		)	(11.4		)
Revenues	$	249.5	$	216.3	$	333.6	$	176.0	$	150.4	$	(19.4	)	$	1,106.4



	Three Months Ended September 30, 2018
	Seaborne Thermal Mining		Seaborne Metallurgical Mining		Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Corporate and Other ⁽¹⁾			Consolidated
	(Dollars in millions)
One year or longer	$	235.3	$	199.5	$	330.2	$	205.3	$	146.6	$	—		$	1,116.9
Less than one year	69.8		169.9		43.5		3.1		6.0		—			292.3
Other ⁽²⁾	—		0.9		—		0.1		3.5		(1.1		)	3.4
Revenues	$	305.1	$	370.3	$	373.7	$	208.5	$	156.1	$	(1.1	)	$	1,412.6



	Nine Months Ended September 30, 2019
	Seaborne Thermal Mining		Seaborne Metallurgical Mining		Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Corporate and Other ⁽¹⁾		Consolidated
	(Dollars in millions)
One year or longer	$	480.2	$	668.8	$	837.6	$	497.6	$	422.2	$	—	$	2,906.4
Less than one year	239.4		160.6		65.8		24.7		6.1		—		496.6
Other ⁽²⁾	1.1		2.3		0.1		0.3		19.9		79.3		103.0
Revenues	$	720.7	$	831.7	$	903.5	$	522.6	$	448.2	$	79.3	$	3,506.0



	Nine Months Ended September 30, 2018
	Seaborne Thermal Mining		Seaborne Metallurgical Mining		Powder River Basin Mining		Midwestern U.S. Mining		Western U.S. Mining		Corporate and Other ⁽¹⁾		Consolidated
	(Dollars in millions)
One year or longer	$	585.8	$	852.1	$	984.4	$	587.0	$	400.4	$	—	$	3,409.7
Less than one year	187.5		399.8		100.0		20.5		25.9		—		733.7
Other ⁽²⁾	0.6		2.1		0.1		0.2		13.1		25.2		41.3
Revenues	$	773.9	$	1,254.0	$	1,084.5	$	607.7	$	439.4	$	25.2	$	4,184.7


⁽¹⁾	Corporate and Other revenue includes gains and losses related to mark-to-market adjustments from economic hedge activities intended to hedge future coal sales. Refer to Note 8. “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 September 30, 2019 and December 31, 2018 consisted of the following:



	September 30, 2019		December 31, 2018
	(Dollars in millions)
Trade receivables, net	$	257.1	$	345.5
Miscellaneous receivables, net	36.3		104.9
Accounts receivable, net	$	293.4	$	450.4