Retirement and Other Benefit Programs (Funded and Unfunded Statuses of Plans) (Details) - Baxalta - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 426.3
Projected benefit obligation	$ 965.5
Funded status percentage	44.00%
U.S. pensions
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 228.4	$ 0.0
Projected benefit obligation	384.1	0.0
U.S. pensions \| Qualified plan
Defined Benefit Plan Disclosure [Line Items]
Plan assets	228.4
Projected benefit obligation	$ 352.8
Funded status percentage	65.00%
U.S. pensions \| Nonqualified plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 31.3
International pensions
Defined Benefit Plan Disclosure [Line Items]
Plan assets	197.9	0.0
Projected benefit obligation	581.4	$ 0.0
International pensions \| Funded plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	197.9
Projected benefit obligation	$ 413.7
Funded status percentage	48.00%
International pensions \| Unfunded plans
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 167.7

1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Projected Benefit Obligation
-URI http://asc.fasb.org/extlink&oid=6522206

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accumulated Postretirement Benefit Obligation
-URI http://asc.fasb.org/extlink&oid=6503904

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 35
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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