Revenues (Tables)

3 Months Ended

Mar. 31, 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 March 31, 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	$	38.4	$	—	$	287.3	$	179.0	$	142.7	$	—	$	647.4
Export	211.9		—		—		—		7.0		—		218.9
Total thermal	250.3		—		287.3		179.0		149.7		—		866.3
Metallurgical coal
Export	—		323.7		—		—		—		—		323.7
Total metallurgical	—		323.7		—		—		—		—		323.7
Other	0.7		0.8		—		0.1		6.0		53.0		60.6
Revenues	$	251.0	$	324.5	$	287.3	$	179.1	$	155.7	$	53.0	$	1,250.6



	Three Months Ended March 31, 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	$	36.1	$	—	$	389.2	$	200.9	$	130.3	$	—	$	756.5
Export	164.9		—		—		0.7		8.0		—		173.6
Total thermal	201.0		—		389.2		201.6		138.3		—		930.1
Metallurgical coal
Export	—		465.3		—		—		—		—		465.3
Total metallurgical	—		465.3		—		—		—		—		465.3
Other	0.4		0.9		0.1		0.1		5.4		60.4		67.3
Revenues	$	201.4	$	466.2	$	389.3	$	201.7	$	143.7	$	60.4	$	1,462.7

Disaggregation of Revenue by Contract Duration [Table Text Block]

Revenue by contract duration was as follows:



	Three Months Ended March 31, 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	$	171.1	$	232.8	$	280.1	$	167.8	$	146.0	$	—	$	997.8
Less than one year	79.2		90.9		7.2		11.2		3.7		—		192.2
Other ⁽²⁾	0.7		0.8		—		0.1		6.0		53.0		60.6
Revenues	$	251.0	$	324.5	$	287.3	$	179.1	$	155.7	$	53.0	$	1,250.6



	Three Months Ended March 31, 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	$	177.3	$	397.5	$	343.4	$	187.6	$	127.3	$	—	$	1,233.1
Less than one year	23.7		67.8		45.8		14.0		11.0		—		162.3
Other ⁽²⁾	0.4		0.9		0.1		0.1		5.4		60.4		67.3
Revenues	$	201.4	$	466.2	$	389.3	$	201.7	$	143.7	$	60.4	$	1,462.7


⁽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 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 March 31, 2019 and December 31, 2018 consisted of the following:



	March 31, 2019		December 31, 2018
	(Dollars in millions)
Trade receivables, net	$	366.6	$	345.5
Miscellaneous receivables, net	188.0		104.9
Accounts receivable, net	$	554.6	$	450.4