Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign

Components of income (loss) before income taxes are as follows:

	2014			2013			2012
United States	$	(94.3	)	$	(61.1	)	$	(261.2	)
Foreign	5.1			3.9			6.3
Noncontrolling interests	62.8			64.2			46.3
Income (loss) before income taxes	$	(26.4	)	$	7.0		$	(208.6	)

Schedule of Deferred Tax Assets and Liabilities

Significant components of the Company’s deferred tax assets and liabilities at December 31, 2014 and 2013 are as follows:

	2014			2013
Deferred tax assets:
Net operating loss and tax credit carryforwards	$	778.1		$	663.5
Postretirement benefits	201.2			185.0
Pension benefits	258.6			216.6
Inventories	152.6			118.8
Other assets	114.2			96.3
Valuation allowance	(1,000.4		)	(764.1		)
Total deferred tax assets	504.3			516.1
Deferred tax liabilities:
Depreciable assets	(322.7		)	(333.1		)
Other liabilities	(43.6		)	(36.8		)
Total deferred tax liabilities	(366.3		)	(369.9		)
Net deferred tax assets	$	138.0		$	146.2

Summary of Valuation Allowance

The following reflects changes in the valuation allowance for the years ended December 31, 2014, 2013 and 2012:

	2014		2013			2012
Balance at beginning of year	$	764.1	$	873.1		$	22.3
Change in valuation allowance:
Included in income tax expense (benefit)	36.7		21.9			865.5
Change in deferred assets related to other comprehensive income	199.6		(130.9		)	—
Included in stockholders’ equity related to issuance of exchangeable debt	—		—			(14.7		)
Balance at end of year	$	1,000.4	$	764.1		$	873.1

Schedule of Components of Income Tax Expense (Benefit)

Significant components of income tax expense (benefit) are as follows:

	2014			2013			2012
Current:
Federal	$	—		$	(3.4	)	$	—
State	(1.1		)	0.2			1.0
Foreign	2.1			1.9			1.9
Noncontrolling interests	—			—			17.6
Deferred:
Federal	7.7			14.0			31.5
State	0.2			1.2			2.8
Amount allocated to other comprehensive income	—			(22.7		)	—
Change in valuation allowance on beginning-of-the-year deferred tax assets	(1.2		)	(1.6		)	735.2
Income tax expense (benefit)	$	7.7		$	(10.4	)	$	790.0

Schedule of Effective Income Tax Rate Reconciliation

The reconciliation of income tax on income (loss) before income taxes computed at the U.S. federal statutory tax rates to actual income tax expense (benefit) is as follows:

	2014			2013			2012
Income tax expense (benefit) at U.S. federal statutory rate	$	(9.2	)	$	2.4		$	(73.0	)
Income tax expense on noncontrolling interest earnings not taxable to the Company	(22.0		)	(22.5		)	—
State and foreign tax expense, net of federal tax	(3.1		)	1.7			(4.8		)
Increase in deferred tax asset valuation allowance	36.7			21.9			865.5
Amount allocated to other comprehensive income	—			(22.7		)	—
Change in accrual for uncertain tax positions	(0.9		)	(1.7		)	—
Stock compensation in excess of tax deduction	2.0			3.1			—
Expiration of charitable contribution carryforwards	—			2.5			—
Other permanent differences	4.2			4.9			2.3
Income tax expense (benefit)	$	7.7		$	(10.4	)	$	790.0

Schedule of Unrecognized Tax Benefits Roll Forward

A reconciliation of the change in unrecognized tax benefits for 2014, 2013 and 2012 is presented below:

	2014			2013			2012
Balance at beginning of year	$	53.8		$	54.0		$	49.2
Increases (decreases) for prior year tax positions	(0.2		)	(0.8		)	1.6
Increases (decreases) for current year tax positions	7.7			0.9			3.7
(Decreases) related to statute lapse	(1.4		)	(0.3		)	(0.5		)
Balance at end of year	$	59.9		$	53.8		$	54.0