Consolidated statements of comprehensive income (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net income	$ 660	$ 446	$ 1,022	$ 711
Available-for-sale investments:
Unrealized gains (losses), net of taxes	0	0	0	2
Net actuarial gains (losses) of defined benefit plans:
Adjustment, net of taxes	48	(12)	80	11
Reclassification of recognized transactions, net of taxes	16	12	33	23
Prior service cost of defined benefit plans:
Adjustment, net of taxes	(1)	1	(2)	0
Reclassification of recognized transactions, net of taxes	(2)	0	(2)	0
Derivative instrument:
Change in fair value, net of taxes	(1)	0	(1)	(1)
Reclassification of recognized transactions, net of taxes	0	0	1	0
Other comprehensive income (loss), net of taxes	60	1	109	35
Total comprehensive income	$ 720	$ 447	$ 1,131	$ 746

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 130

-Paragraph 17, 22

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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