Business Segments (Tables)

12 Months Ended

Dec. 31, 2012

Segment Reporting [Abstract]

Segment reporting information

	2012			2011			2010
Revenues from external customers
NACoal	$	132.4		$	81.8		$	156.8
HBB	521.6			493.0			515.7
KC	224.7			221.2			219.6
Eliminations	(5.3		)	(5.6		)	(6.5		)
Total	$	873.4		$	790.4		$	885.6
Gross profit
NACoal	$	28.0		$	15.3		$	37.9
HBB	102.3			97.2			111.1
KC	95.8			97.4			97.7
NACCO and Other	(0.3		)	(0.2		)	(0.2		)
Eliminations	0.1			(0.1		)	(0.1		)
Total	$	225.9		$	209.6		$	246.4
Selling, general and administrative expenses
NACoal	$	36.8		$	26.6		$	28.2
HBB	66.5			63.4			65.2
KC	100.4			94.9			91.8
NACCO and Other	6.7			7.1			10.6
Total	$	210.4		$	192.0		$	195.8

	2012			2011			2010
Operating profit (loss)
NACoal	$	43.2		$	35.2		$	53.3
HBB	35.8			33.8			45.9
KC	(4.6		)	2.5			5.9
NACCO and Other	(7.0		)	(7.3		)	(10.8		)
Eliminations	0.1			(0.1		)	(0.1		)
Total	$	67.5		$	64.1		$	94.2
Interest expense
NACoal	$	2.9		$	3.0		$	3.3
HBB	2.7			5.2			7.2
KC	0.5			0.5			0.3
Total	$	6.1		$	8.7		$	10.8
Interest income
NACoal	$	(0.2	)	$	(0.3	)	$	(0.3	)
Total	$	(0.2	)	$	(0.3	)	$	(0.3	)
Other (income) expense
NACoal	$	(1.3	)	$	(1.4	)	$	(0.1	)
HBB	0.3			0.8			0.3
KC	—			0.1			0.1
NACCO and Other	4.6			(56.1		)	20.7
Total	$	3.6		$	(56.6	)	$	21.0
Income tax provision (benefit)
NACoal	$	9.0		$	4.5		$	10.8
HBB	11.6			9.4			14.0
KC	(2.0		)	0.8			2.0
NACCO and Other	(3.0		)	18.1			(11.1		)
Eliminations	0.2			—			(0.1		)
Total	$	15.8		$	32.8		$	15.6
Income (loss) from continuing operations
NACoal	$	32.8		$	29.4		$	39.6
HBB	21.2			18.4			24.4
KC	(3.1		)	1.1			3.5
NACCO and Other	(8.6		)	30.7			(20.4		)
Eliminations	(0.1		)	(0.1		)	—
Total	$	42.2		$	79.5		$	47.1

	2012			2011			2010
Total assets
NACoal	$	368.7		$	278.5		$	269.2
HBB	215.5			201.5			251.7
KC	84.0			89.0			86.6
NACCO and Other	154.6			169.5			71.8
Discontinued Operations	—			1,117.0			1,041.2
Eliminations	(46.5		)	(46.8		)	(49.6		)
Total	$	776.3		$	1,808.7		$	1,670.9
Depreciation, depletion and amortization
NACoal	$	10.9		$	7.9		$	9.9
HBB	3.1			4.9			3.6
KC	3.6			3.1			3.5
NACCO and Other	0.4			0.5			1.3
Total	$	18.0		$	16.4		$	18.3
Capital expenditures
NACoal	$	37.1		$	14.1		$	9.8
HBB	3.2			3.7			2.2
KC	3.9			2.3			2.7
NACCO and Other	0.5			0.1			1.1
Total	$	44.7		$	20.2		$	15.8

Revenue from external customers and long-lived assets, by geographical areas

	United States		Other		Consolidated
2012
Revenues from unaffiliated customers, based on the customers’ location	$	746.8	$	126.6	$	873.4
Long-lived assets	$	197.1	$	6.1	$	203.2
2011
Revenues from unaffiliated customers, based on the customers’ location	$	662.0	$	128.4	$	790.4
Long-lived assets	$	124.2	$	5.0	$	129.2
2010
Revenues from unaffiliated customers, based on the customers’ location	$	770.8	$	114.8	$	885.6
Long-lived assets	$	125.1	$	4.2	$	129.3