Subsequent Events Schedule of Debt (Details) - Senior Notes - Subsequent Event - USD ($)	Apr. 01, 2016	Apr. 30, 2016
Subsequent Event [Line Items]
Debt instrument face amount		$ 2,500,000,000.0
April 1, 2019
Subsequent Event [Line Items]
Maturity Date	Apr. 01, 2019
Debt instrument face amount	$ 500
Coupon Rate (as a percent)	1.90%
Pricing (percentage of par)	99.945%
July 15, 2021
Subsequent Event [Line Items]
Maturity Date	Jul. 15, 2021
Debt instrument face amount	$ 500
Coupon Rate (as a percent)	2.50%
Pricing (percentage of par)	99.948%
July 15, 2026
Subsequent Event [Line Items]
Maturity Date	Jul. 15, 2026
Debt instrument face amount	$ 1,000
Coupon Rate (as a percent)	3.30%
Pricing (percentage of par)	99.623%
April 1, 2046
Subsequent Event [Line Items]
Maturity Date	Apr. 01, 2046
Debt instrument face amount	$ 500
Coupon Rate (as a percent)	4.50%
Pricing (percentage of par)	99.657%

Senior Note Pricing Percentage of Par

No definition available.

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- Definition

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

+ References

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=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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Balance Type:	credit
Period Type:	instant

- 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
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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- Details

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