Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2020

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 March 31, 2020
	Seaborne Thermal Mining		Seaborne Metallurgical Mining		Powder River Basin Mining		Other U.S. Thermal Mining		Corporate and Other ⁽¹⁾			Consolidated
	(Dollars in millions)
Thermal coal
Domestic	$	36.5	$	—	$	266.6	$	184.6	$	—		$	487.7
Export	163.7		—		—		—		—			163.7
Total thermal	200.2		—		266.6		184.6		—			651.4
Metallurgical coal
Export	—		192.5		—		—		—			192.5
Total metallurgical	—		192.5		—		—		—			192.5
Other	0.9		0.7		—		7.7		(7.0		)	2.3
Revenues	$	201.1	$	193.2	$	266.6	$	192.3	$	(7.0	)	$	846.2



	Three Months Ended March 31, 2019
	Seaborne Thermal Mining		Seaborne Metallurgical Mining		Powder River Basin Mining		Other U.S. Thermal Mining		Corporate and Other ⁽¹⁾		Consolidated
	(Dollars in millions)
Thermal coal
Domestic	$	38.4	$	—	$	287.3	$	321.7	$	—	$	647.4
Export	211.9		—		—		7.0		—		218.9
Total thermal	250.3		—		287.3		328.7		—		866.3
Metallurgical coal
Export	—		323.7		—		—		—		323.7
Total metallurgical	—		323.7		—		—		—		323.7
Other	0.7		0.8		—		6.1		53.0		60.6
Revenues	$	251.0	$	324.5	$	287.3	$	334.8	$	53.0	$	1,250.6

Disaggregation of Revenue by Contract Duration [Table Text Block]

Revenue by initial contract duration was as follows:



	Three Months Ended March 31, 2020
	Seaborne Thermal Mining		Seaborne Metallurgical Mining		Powder River Basin Mining		Other U.S. Thermal Mining		Corporate and Other ⁽¹⁾			Consolidated
	(Dollars in millions)
One year or longer	$	99.3	$	140.1	$	243.4	$	184.6	$	—		$	667.4
Less than one year	100.9		52.4		23.2		—		—			176.5
Other ⁽²⁾	0.9		0.7		—		7.7		(7.0		)	2.3
Revenues	$	201.1	$	193.2	$	266.6	$	192.3	$	(7.0	)	$	846.2



	Three Months Ended March 31, 2019
	Seaborne Thermal Mining		Seaborne Metallurgical Mining		Powder River Basin Mining		Other U.S. Thermal Mining		Corporate and Other ⁽¹⁾		Consolidated
	(Dollars in millions)
One year or longer	$	171.1	$	232.8	$	280.1	$	313.8	$	—	$	997.8
Less than one year	79.2		90.9		7.2		14.9		—		192.2
Other ⁽²⁾	0.7		0.8		—		6.1		53.0		60.6
Revenues	$	251.0	$	324.5	$	287.3	$	334.8	$	53.0	$	1,250.6


⁽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 7. “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 March 31, 2020 and December 31, 2019 consisted of the following:



	March 31, 2020		December 31, 2019
	(Dollars in millions)
Trade receivables, net	$	230.0	$	283.1
Miscellaneous receivables, net	35.2		46.4
Accounts receivable, net	$	265.2	$	329.5