Note 10. Income Taxes Income Taxes (Tables)

12 Months Ended

Dec. 31, 2023

Income Tax Disclosure [Abstract]

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,
	2023		2022		2021
	(in millions)
Current:
Federal:
Effect of CARES Act	$	—	$	(0.5)	$	2.1
Other	38.7		2.1		(3.0)
	38.7		1.6		(0.9)
State	1.3		3.5		(0.6)
Foreign	10.5		7.8		4.3
Total current	50.5		12.9		2.8
Deferred:
Federal:
Effect of CARES Act	—		—		0.4
Other	(20.7)		14.5		10.4
	(20.7)		14.5		10.8
State	(8.1)		0.4		2.4
Foreign	(12.7)		(0.2)		(0.1)
Total deferred	(41.5)		14.7		13.1
Provision (benefit)	$	9.0	$	27.6	$	15.9

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,
	2023		2022		2021
Statutory rate	21.0	%	21.0	%	21.0	%
Foreign branch taxes	1.8		2.1		3.0
State taxes	2.2		1.7		3.0
Executive compensation limitations	1.3		1.3		1.8
Noncontrolling interest in partially-owned subsidiaries	(1.8)		(2.1)		—
Equity compensation	(0.5)		(1.1)		(4.0)
Changes in valuation allowance and reserves	(2.2)		(0.9)		(4.3)
Changes in state laws and apportionment	(7.1)		(0.5)		0.3
Release of residual taxes from OCI	(8.1)		—		—
Effect of CARES Act	—		(0.5)		4.5
Foreign rate differential	—		—		1.4
Nondeductible excise tax	—		—		1.3
Nondeductible compensation	—		—		1.2
Other, net	(0.6)		0.8		(0.4)
Effective rate	6.0	%	21.8	%	28.8	%

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

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

	December 31,
	2023		2022
	(in millions)
Deferred tax liabilities:
Depreciation, depletion, and amortization	$	1,100.6	$	1,072.6
Partially-owned subsidiaries basis difference	129.9		134.3
Right-of-use assets	22.3		20.9
Equity items	3.5		4.8
Accrued liabilities and other	4.8		3.0
Total deferred tax liabilities	1,261.1		1,235.6
Deferred tax assets:
Workers compensation, pensions, and other benefits	30.0		27.4
Interest expense	85.0		31.3
Warranties and reserves	1.5		2.8
Tax loss carryforwards and credits	31.2		40.4
Inventory	5.9		3.6
Lease liabilities	26.4		25.8
Total deferred tax assets	180.0		131.3
Net deferred tax liabilities before valuation allowances	1,081.1		1,104.3
Valuation allowances	21.6		29.5
Net deferred tax liabilities before reserve for uncertain tax positions	1,102.7		1,133.8
Deferred tax assets included in reserve for uncertain tax positions	(0.7)		(0.7)
Net deferred tax liability	$	1,102.0	$	1,133.1

Unrecognized Tax Benefit Rollforward [Table Text Block]

The change in unrecognized tax benefits was as follows:

	Year Ended December 31,
	2023		2022		2021
	(in millions)
Beginning balance	$	3.8	$	2.3	$	2.3
Additions for tax positions related to the current year	—		1.1		—
Additions for tax positions of prior years	—		1.7		—
Reductions for tax positions of prior years	(2.8)		—		—
Settlements	—		—		—
Expiration of statute of limitations	—		(1.3)		—
Ending balance	$	1.0	$	3.8	$	2.3