v3.7.0.1

Recent Accounting Pronouncements (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities	$ 5,656	$ 5,399
Net cash provided by (used in) financing activities	(1,141)	643
Financial Assets and Financial Liabilities New Accounting Pronouncement [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement impact on net income if adopted	104
Share Based Compensation New Accounting Pronouncement [Member] | Effect of Adoption [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Decrease in income tax expense	$ 139
Increase in diluted earnings per share (in dollars per share)	$ 0.03
Net cash provided by operating activities	$ 385	289
Net cash provided by (used in) financing activities	$ (385)	$ (289)

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- Definition

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+ References

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Amount of the effect of the adoption of a new accounting pronouncement on income tax expense.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
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- Definition

Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

+ References

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- Definition

Amount of the effect of a change in accounting principle on diluted earnings per share.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Retrospective Application
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+ References

No definition available.

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