Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Topic 835
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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- Definition

The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
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Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

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Asset Acquisitions, Dispositions and Other (Details) - USD ($) $ in Millions	1 Months Ended					3 Months Ended
	Jun. 30, 2016	May. 31, 2016	Apr. 30, 2016	Feb. 29, 2016	Nov. 30, 2015	Mar. 31, 2016
Debt Instruments [Abstract]
Debt instrument issued			$ 2,750
Republic of Ecuador \| International Center for the Settlement of Investment Disputes
Litigation Settlement
Pre-tax gain on settlement						$ 681
Award amount					$ 1,000
Senior unsecured notes
Debt Instruments [Abstract]
Net proceeds from issuance of long-term debt			$ 2,720
2.60% senior unsecured notes due 2022
Debt Instruments [Abstract]
Debt instrument interest rate stated percentage			2.60%
Debt instrument issued			$ 400
3.40% senior unsecured notes due 2026
Debt Instruments [Abstract]
Debt instrument interest rate stated percentage			3.40%
Debt instrument issued			$ 1,150
4.40% senior unsecured notes due 2046
Debt Instruments [Abstract]
Debt instrument interest rate stated percentage			4.40%
Debt instrument issued			$ 1,200
Senior Unsecured Notes 2.50 Percent Member
Debt Instruments [Abstract]
Debt retirement at maturity				$ 700
Senior Unsecured Notes 4.125 Percent Due 2016 Member \| Pro Forma [Member]
Debt Instruments [Abstract]
Debt instrument interest rate stated percentage	4.125%
Debt retirement at maturity	$ 750
Senior Unsecured Notes 1.75 Percent Due 2017 Member \| Pro Forma [Member]
Debt Instruments [Abstract]
Debt instrument interest rate stated percentage		1.75%
Early repayment of debt through exercise of redemption option		$ 1,250