Comprehensive Income

6 Months Ended

Jun. 30, 2013

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Comprehensive Income

Comprehensive Income

Other comprehensive income refers to revenues, expenses, gains and losses that under generally accepted accounting principles are included in comprehensive income, a component of equity within the Consolidated Balance Sheets, rather than net income on the Consolidated Statements of Income. Under existing accounting standards, other comprehensive income may include, among other things, unrecognized gains and losses and prior service credit related to pension and other postretirement benefit plans and accounting for derivative financial instruments, which qualify for cash flow hedge accounting.

The following table provides the components of accumulated other comprehensive loss by component (in millions):

	Pension and Retiree Health and Welfare Benefit Itemsa			Equity Method Investments			Total
Balance at December 31, 2012	$	(241	)	$	(4	)	$	(245	)
Other comprehensive income before reclassifications	—			(1		)	(1		)
Amounts reclassified from accumulated other comprehensive loss	6			—			6
Balance at June 30, 2013	$	(235	)	$	(5	)	$	(240	)

^a Amounts are net of tax.

Reclassifications out of Accumulated Other Comprehensive Loss
	Three Months Ended June 30,
Details about Accumulated Other Comprehensive Loss Components	2013			Income Statement Line Item
Amortization of pension and retiree health and welfare benefit items
Actuarial losses	$	5		b
	5			Total before tax
	(2		)	Tax (expense)/benefit
Total reclassifications for the period	$	3		Net of tax
	Six Months Ended June 30,
Details about Accumulated Other Comprehensive Loss Components	2013			Income Statement Line Item
Amortization of pension and retiree health and welfare benefit items
Actuarial losses	$	10		b
	10			Total before tax
	(4		)	Tax (expense)/benefit
Total reclassifications for the period	$	6		Net of tax

^b This accumulated other comprehensive loss component is included in the computation of net periodic pension cost (see Note 8 for additional details).