Borrowings and Capital Lease Obligations (Senior Notes Related to Baxalta Acquisition) (Details) - USD ($)	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Carrying amount	$ 22,967,800,000	$ 1,594,800,000
Baxalta
Debt Instrument [Line Items]
Aggregate Amount	5,000,000,000.0
Baxalta \| Senior Notes
Debt Instrument [Line Items]
Aggregate Amount	5,000,000,000
Carrying amount	5,063,600,000
Baxalta \| Senior Notes \| Variable-rate notes due 2018
Debt Instrument [Line Items]
Aggregate Amount	$ 375,000,000
Effective Interest Rate	2.20%
Carrying amount	$ 371,600,000
Baxalta \| Senior Notes \| Variable-rate notes due 2018 \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	0.78%
Baxalta \| Senior Notes \| Fixed-rate notes due 2018
Debt Instrument [Line Items]
Aggregate Amount	$ 375,000,000
Coupon Rate	2.00%
Effective Interest Rate	2.00%
Carrying amount	$ 374,800,000
Baxalta \| Senior Notes \| Fixed-rate notes due 2020
Debt Instrument [Line Items]
Aggregate Amount	$ 1,000,000,000
Coupon Rate	2.875%
Effective Interest Rate	2.80%
Carrying amount	$ 1,004,300,000
Baxalta \| Senior Notes \| Fixed-rate notes due 2022
Debt Instrument [Line Items]
Aggregate Amount	$ 500,000,000
Coupon Rate	3.60%
Effective Interest Rate	3.30%
Carrying amount	$ 508,400,000
Baxalta \| Senior Notes \| Fixed-rate notes due 2025
Debt Instrument [Line Items]
Aggregate Amount	$ 1,750,000,000
Coupon Rate	4.00%
Effective Interest Rate	3.90%
Carrying amount	$ 1,772,800,000
Baxalta \| Senior Notes \| Fixed-rate notes due 2045
Debt Instrument [Line Items]
Aggregate Amount	$ 1,000,000,000
Coupon Rate	5.25%
Effective Interest Rate	5.10%
Carrying amount	$ 1,031,700,000

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ 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)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 9

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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=34725769&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=6451184&loc=d3e28551-108399

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Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ 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

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=6451184&loc=d3e28551-108399

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- Definition

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

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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