Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2013

Changes In Accumulated Other Comprehensive Loss, Net Of Tax

Changes in accumulated other comprehensive loss, net of tax, are as follows:

	(Dollars in Thousands)
	Pension and   Postretirement   Benefit Plans		Foreign Currency		Unamortized Value of Terminated Forward Starting Interest Rate Swap		Accumulated Other Comprehensive Loss
		Three Months Ended March 31, 2013
Balance at beginning of period	$	(108,189)	$	6,157	$	(4,137)	$	(106,169)
Other comprehensive loss before reclassifications, net of tax		-		(834)		-		(834)
Amounts reclassified from accumulated other comprehensive loss, net of tax		1,893		-		162		2,055
Other comprehensive earnings, net of tax		1,893		(834)		162		1,221
Balance at end of period	$	(106,296)	$	5,323	$	(3,975)	$	(104,948)

	Three Months Ended March 31, 2012
Balance at beginning of period	$	(84,204)	$	5,076	$	(4,762)	$	(83,890)
Other comprehensive earnings before reclassifications, net of tax		-		199		-		199
Amounts reclassified from accumulated other comprehensive loss, net of tax		1,548		-		152		1,700
Other comprehensive earnings, net of tax		1,548		199		152		1,899
Balance at end of period	$	(82,656)	$	5,275	$	(4,610)	$	(81,991)

Noncurrent Deferred Tax Assets Recorded In Accumulated Other Comprehensive Loss

Changes in net noncurrent deferred tax assets recorded in accumulated other comprehensive loss are as follows:

	(Dollars in Thousands)
	Pension and Postretirement Benefit Plans			Unamortized Value of Terminated Forward Starting Interest Rate Swap			Net Noncurrent Deferred Tax Assets
Balance at beginning of period	$	70,881		$	2,707		$	73,588
Tax effect of other comprehensive earnings		(1,240	)		(107	)		(1,347	)
Balance at end of period	$	69,641		$	2,600		$	72,241
		Three Months Ended March 31, 2013
Balance at beginning of period	$	55,161		$	3,116		$	58,277
Tax effect of other comprehensive earnings		(1,013	)		(99	)		(1,112	)
Balance at end of period	$	54,148		$	3,017		$	57,165

Reclassification Out of Accumulated Other Comprehensive Loss

Reclassifications out of accumulated other comprehensive loss are as follows:

	Three Months Ended March  31,						Affected line item in the consolidated statements of earnings and comprehensive earnings
	2013			2012
		(Dollars in Thousands)
Pension and postretirement benefit plans
Amortization of:
Prior service credit	$	(702	)	$	(692	)
Actuarial loss		3,835			3,253
		3,133			2,561		Cost of sales; Selling, general and administrative expenses
Tax benefit		(1,240	)		(1,013	)	Taxes on income
	$	1,893		$	1,548
Unamortized value of terminated forward starting interest rate swap
Additional interest expense	$	269		$	251		Interest expense
Tax benefit		(107	)		(99	)	Taxes on income
	$	162		$	152

Basic And Diluted Earnings Per Common Share

The following table reconciles the numerator and denominator for basic and diluted loss per common share:

	Three Months Ended March  31,
	2013		2012
		(In Thousands)
Net loss from continuing operations attributable to Martin Marietta Materials, Inc.	$	(27,739)	$	(36,143)
Less: Distributed and undistributed earnings attributable to unvested awards		(93)		(126)
Basic and diluted net loss available to common shareholders from continuing operations attributable to Martin Marietta Materials, Inc.		(27,832)		(36,269)
Basic and diluted net loss available to common shareholders from discontinued operations		(100)		(589)
Basic and diluted net loss available to common shareholders attributable to Martin Marietta Materials, Inc.	$	(27,932)	$	(36,858)
Basic and diluted weighted-average common shares outstanding		46,028		45,734

Parent

Comprehensive Loss Attributable

Comprehensive loss attributable to Martin Marietta Materials, Inc. is as follows:

	Three Months Ended March  31,
	2013		2012
		(Dollars in Thousands)
Net loss attributable to Martin Marietta Materials, Inc.	$	(27,839)	$	(36,732)
Other comprehensive earnings , net of tax		1,221		1,899
Comprehensive loss attributable to Martin Marietta Materials, Inc.	$	(26,618)	$	(34,833)

Noncontrolling Interest

Comprehensive Loss Attributable

Comprehensive loss attributable to noncontrolling interests, consisting of net earnings or loss and adjustments for the funded status of pension and postretirement benefit plans, is as follows:

	Three Months Ended March  31,
	2013		2012
		(Dollars in Thousands)
Net loss attributable to noncontrolling interests	$	(1,490)	$	(941)
Other comprehensive earnings, net of tax		2		3
Comprehensive loss attributable to noncontrolling interests	$	(1,488)	$	(938)