CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 2,850us-gaap_NetIncomeLoss	$ 2,280us-gaap_NetIncomeLoss	$ 2,306us-gaap_NetIncomeLoss
Changes in:
Unrealized net capital gains and losses	280	(1,188)	1,434
Unrealized foreign currency translation adjustments	(40)	(32)	14
Unrecognized pension and other postretirement benefit cost	(725)	1,091	(302)
Other comprehensive (loss) income, after-tax	(485)	(129)	1,146
Comprehensive income	$ 2,365us-gaap_ComprehensiveIncomeNetOfTax	$ 2,151us-gaap_ComprehensiveIncomeNetOfTax	$ 3,452us-gaap_ComprehensiveIncomeNetOfTax

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Net of tax amount of the appreciation (loss) in the value of unsold available-for-sale securities. Includes amounts related to other than temporary impairment (OTTI) losses.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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