Accumulated Other Comprehensive Income

12 Months Ended

Dec. 31, 2016

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

Comprehensive Income

Accumulated Other 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.

The following tables provide the components of AOCI by component (in millions):

	Pension and Retiree Health and Welfare Benefit Itemsa			Equity Method Investments			Total
Balance at December 31, 2015	$	50		$	(2	)	$	48
Other comprehensive (loss) income before reclassifications	73			(1		)	72
Amounts reclassified from AOCI	(1		)	—			(1		)
Balance at December 31, 2016	$	122		$	(3	)	$	119
Balance at December 31, 2014	$	—		$	(2	)	$	(2	)
Other comprehensive income before reclassifications	50			—			50
Amounts reclassified from AOCI	—			—			—
Balance at December 31, 2015	$	50		$	(2	)	$	48

^a Amounts are net of tax. See Note 13 for additional details.

Reclassifications out of AOCIb
	Year Ended			Year Ended
Details about AOCI Components	December 31, 2016			December 31, 2015			Income Statement Line Item
Amortization of pension and retiree health and welfare benefit items
Actuarial losses	$	(1	)	$	(4	)	c
Prior service credits	3			3			c
	2			(1		)	Total before tax
	(1		)	1			Tax (expense) / benefit
Total reclassifications for the period	$	1		$	—		Net of tax

^b Amounts in parenthesis indicate debits to the income statement.

^c This accumulated other comprehensive income component is included in the computation of net periodic pension and retiree health and welfare cost (see Note 13 for additional details).