Note 9. Income Taxes Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Unrecognized Tax Benefit Rollforward [Table Text Block]

The change in unrecognized tax benefits was as follows:

	Year Ended December 31,
	2021		2020		2019
	(in millions)
Beginning balance	$	2.3	$	2.3	$	8.1
Additions for tax positions of prior years	—		—		—
Reductions for tax positions of prior years	—		—		—
Settlements	—		—		(5.8)
Expiration of statute of limitations	—		—		—
Ending balance	$	2.3	$	2.3	$	2.3

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The components of the provision (benefit) for income taxes from continuing operations are as follows:

	Year Ended December 31,
	2021		2020		2019
	(in millions)
Current:
Federal:
Effect of CARES Act	$	2.1	$	(373.3)	$	—
Other	(3.0)		(142.1)		(6.8)
	(0.9)		(515.4)		(6.8)
State	(0.6)		(1.5)		6.9
Foreign	4.3		4.3		6.1
Total current	2.8		(512.6)		6.2
Deferred:
Federal:
Effect of CARES Act	0.4		192.9		—
Other	10.4		31.3		40.4
	10.8		224.2		40.4
State	2.4		4.1		13.7
Foreign	(0.1)		10.2		(1.5)
Total deferred	13.1		238.5		52.6
Provision (benefit)	$	15.9	$	(274.1)	$	58.8

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The following is a reconciliation between the statutory U.S. federal income tax rate and our effective income tax rate on income before income taxes:

	Year Ended December 31,
	2021		2020		2019
Statutory rate	21.0	%	21.0	%	21.0	%
Effect of CARES Act	4.5		34.4		—
State taxes	3.0		1.1		2.3
Foreign branch taxes	3.0		(0.2)		1.3
Executive compensation limitations	1.8		(0.3)		1.3
Foreign rate differential	1.4		(0.1)		0.4
Excise tax	1.3		—		—
Nondeductible compensation	1.2		(0.2)		0.6
Changes in state laws and apportionment	0.3		(1.4)		5.8
Equity compensation	(4.0)		—		(0.9)
Changes in valuation allowances and reserves	(4.3)		0.7		—
Impairment – noncontrolling interest in partially-owned subsidiaries	—		(3.3)		—
Interest expense limitations from partially-owned subsidiaries	—		0.2		1.1
Noncontrolling interest in partially-owned subsidiaries	—		0.1		0.2
Other, net	(0.4)		0.2		(0.6)
Effective rate	28.8	%	52.2	%	32.5	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The components of deferred tax liabilities and assets are as follows:

	December 31,
	2021		2020
	(in millions)
Deferred tax liabilities:
Depreciation, depletion, and amortization	$	1,032.2	$	996.8
Partially-owned subsidiaries basis difference	139.2		139.9
Right-of-use assets	18.7		17.5
Accrued liabilities and other	1.9		—
Total deferred tax liabilities	1,192.0		1,154.2
Deferred tax assets:
Workers compensation, pensions, and other benefits	28.7		27.1
Warranties and reserves	7.3		3.9
Equity items	5.9		9.5
Tax loss carryforwards and credits	38.4		62.8
Inventory	6.0		5.4
Accrued liabilities and other	—		5.3
Lease liabilities	24.4		22.9
Total deferred tax assets	110.7		136.9
Net deferred tax liabilities before valuation allowances	1,081.3		1,017.3
Valuation allowances	24.4		25.2
Net deferred tax liabilities before reserve for uncertain tax positions	1,105.7		1,042.5
Deferred tax assets included in reserve for uncertain tax positions	(1.1)		(1.0)
Adjusted net deferred tax liabilities	$	1,104.6	$	1,041.5