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Income Taxes (Table)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Provision For Income Taxes

The provision for income taxes for 2018, 2017 and 2016, consisted of the following:

	Years Ended December 31,
(in millions)	2018				2017				2016
Current:
Federal	$	24.5			$	(167.6	)		$	(41.7	)
State	1.8				14.9				(15.9		)
Non-U.S.	147.2				31.0				94.9
Total current	173.5				(121.7		)		37.3
Deferred:
Federal	(105.1		)		602.3				(147.9		)
State	9.9				(39.9		)		3.9
Non-U.S.	(1.2		)		54.2				32.5
Total deferred	(96.4		)		616.6				(111.5		)
(Benefit from) provision for income taxes	$	77.1			$	494.9			$	(74.2	)

Schedule Of Effective Income Tax Rate

The components of earnings from consolidated companies before income taxes, and the effects of significant adjustments to tax computed at the federal statutory rate, were as follows:

	Years Ended December 31,
(in millions)	2018				2017				2016
United States earnings (loss)	$	322.7			$	(82.5	)		$	(96.4	)
Non-U.S. earnings	228.8				456.5				338.8
Earnings from consolidated companies before income taxes	$	551.5			$	374.0			$	242.4
Computed tax at the U.S. federal statutory rate	21.0		%		35.0		%		35.0		%
State and local income taxes, net of federal income tax benefit	2.0		%		(0.1		)%		(6.1		)%
Percentage depletion in excess of basis	(6.7		)%		(13.2		)%		(34.4		)%
Impact of non-U.S. earnings	11.8		%		(46.9		)%		(4.0		)%
Change in valuation allowance	(15.2		)%		148.8		%		7.7		%
Resolution of uncertain tax positions	(0.4		)%		—		%		(34.9		)%
Share-based excess cost/(benefits)	0.7		%		2.0		%		2.2		%
Other items (none in excess of 5% of computed tax)	0.8		%		6.7		%		3.9		%
Effective tax rate	14.0		%		132.3		%		(30.6		)%

Schedule Of Deferred Tax Assets And Liabilities

Significant components of our deferred tax liabilities and assets as of December 31 were as follows:

	December 31,
(in millions)	2018				2017
Deferred tax liabilities:
Depreciation and amortization	$	317.3			$	864.2
Depletion	390.8				260.9
Partnership tax basis differences	64.6				67.6
Undistributed earnings of non-U.S. subsidiaries	15.0				15.0
Other liabilities	10.3				150.6
Total deferred tax liabilities	$	798.0			$	1,358.3
Deferred tax assets:
Alternative minimum tax credit carryforwards	$	76.5			$	46.8
Capital loss carryforwards	3.0				0.1
Foreign tax credit carryforwards	493.5				322.9
Net operating loss carryforwards	408.9				112.0
Pension plans and other benefits	33.4				2.1
Asset retirement obligations	187.6				174.1
Deferred revenue	—				252.0
Other assets	388.8				169.7
Subtotal	1,591.7				1,079.7
Valuation allowance	1,530.5				584.1
Net deferred tax assets	61.2				495.6
Net deferred tax liabilities	$	(736.8	)		$	(862.7	)

Summary Of Income Tax Uncertainties

	Years Ended December 31,
(in millions)	2018				2017				2016
Gross unrecognized tax benefits, beginning of period	$	39.3			$	27.1			$	98.6
Gross increases:
Prior period tax positions	0.3				1.9				13.5
Current period tax positions	3.8				8.5				6.9
Gross decreases:
Prior period tax positions	(2.9		)		—				(91.6		)
Currency translation	(2.4		)		1.8				(0.3		)
Gross unrecognized tax benefits, end of period	$	38.1			$	39.3			$	27.1

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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