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=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

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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
-Section S99
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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
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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Debt (Medium-Term Notes) (Details) - USD ($)								3 Months Ended
Debt (Medium-Term Notes) (Details) - USD ($)	Apr. 01, 2046	Apr. 01, 2036	Apr. 01, 2026	Apr. 01, 2023	Apr. 01, 2021	Mar. 29, 2019	Oct. 15, 2015	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Proceeds from Issuance of Long-term Debt								$ 7,931,200,000		$ 0
$8.0 Billion Senior Unsecured Notes [Member]
Principal amount of note								8,000,000,000
Proceeds from Issuance of Long-term Debt								7,900,000,000
2.60% Senior Notes due 2019 [Member]
Principal amount of note								$ 1,000,000,000
Debt Instrument, Interest Rate, Stated Percentage								2.60%
Maturity date						Mar. 29, 2019
3.15% Senior Notes due 2021 [Member]
Principal amount of note								$ 1,000,000,000
Debt Instrument, Interest Rate, Stated Percentage								3.15%
Maturity date					Apr. 01, 2021
3.85% Senior Notes due 2023 [Member]
Principal amount of note								$ 1,750,000,000
Debt Instrument, Interest Rate, Stated Percentage								3.85%
Maturity date				Apr. 01, 2023
4.20% Senior Notes due 2026 [Member]
Principal amount of note								$ 2,000,000,000
Debt Instrument, Interest Rate, Stated Percentage								4.20%
Maturity date			Apr. 01, 2026
5.375% Senior Notes due 2036 [Member]
Principal amount of note								$ 500,000,000
Debt Instrument, Interest Rate, Stated Percentage								5.375%
Maturity date		Apr. 01, 2036
5.5% Senior Notes due 2046 [Member]
Principal amount of note								$ 1,750,000,000
Debt Instrument, Interest Rate, Stated Percentage								5.50%
Maturity date	Apr. 01, 2046
2.15% 2018 Note and 3.9% 2025 Note [Member]
Principal amount of note							$ 600,000,000
Proceeds from Issuance of Long-term Debt									$ 594,600,000
2.15% 2018 Note due 2018 [Member]
Principal amount of note							$ 300,000,000
Debt Instrument, Interest Rate, Stated Percentage							2.15%
Maturity date							Oct. 15, 2018
3.9% 2025 Note due 2025 [Member]
Principal amount of note							$ 300,000,000
Debt Instrument, Interest Rate, Stated Percentage							3.90%
Maturity date							Nov. 01, 2025