Retirement and Other Benefit Programs (Pension Plan Assets) (Details) - Baxalta Incorporated [Member] - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 03, 2016
Defined Benefit Plan Disclosure [Line Items]
Target Plan Asset Allocations Range Variance	5.00%
Defined Benefit Plan, Fair Value of Plan Assets		$ 358.5
Cash and Cash Equivalents [Member]
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs [Abstract]
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs	These largely consist of a short-term investment fund, U.S. dollars and foreign currency. The fair value of the short-term investment fund is based on the net asset value
US Treasury and Government [Member]
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs [Abstract]
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs	Values are based on quoted prices in an active market
Corporate Bonds [Member]
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs [Abstract]
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs	Values are based on the valuation date in an active market
Common Stock [Member]
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs [Abstract]
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs	Values are based on the closing prices on the valuation date in an active market on national and international stock exchanges
Mutual Fund [Member]
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs [Abstract]
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs	Values are based on the net asset value of the units held in the respective fund which are obtained from national and international exchanges
Real Estate Funds
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs [Abstract]
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs	Values are based on the net asset value of the units held at year end The value of these assets are either determined by the net asset value of the units held in the respective fund which are obtained from national and international exchanges or based on the net asset value of the underlying assets of the fund provided by the fund manager
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation for plan assets	75.00%
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocation for plan assets	25.00%
Other Holdings [Member] | Hedge Funds [Member]
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs [Abstract]
Defined Benefit Plan, Plan Assets at Fair Value, Valuation Techniques and Inputs	The value of these assets vary by investment type and are primarily based on reputable pricing vendors that typically use pricing matrices or models
U.S. Pension
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 218.0	218.0
U.S. Pension | Equity Securities [Member] | Common/Collective Trust Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	149.5
U.S. Pension | Equity Securities [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	10.7
U.S. Pension | Fixed Income Securities [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	4.4
U.S. Pension | Fixed Income Securities [Member] | Common/Collective Trust Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	53.4
U.S. Pension | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
U.S. Pension | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] | Common/Collective Trust Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
U.S. Pension | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
U.S. Pension | Fair Value, Inputs, Level 1 [Member] | Fixed Income Securities [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
U.S. Pension | Fair Value, Inputs, Level 1 [Member] | Fixed Income Securities [Member] | Common/Collective Trust Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
U.S. Pension | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	218.0
U.S. Pension | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | Common/Collective Trust Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	149.5
U.S. Pension | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	10.7
U.S. Pension | Fair Value, Inputs, Level 2 [Member] | Fixed Income Securities [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	4.4
U.S. Pension | Fair Value, Inputs, Level 2 [Member] | Fixed Income Securities [Member] | Common/Collective Trust Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	53.4
U.S. Pension | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
U.S. Pension | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] | Common/Collective Trust Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
U.S. Pension | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
U.S. Pension | Fair Value, Inputs, Level 3 [Member] | Fixed Income Securities [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
U.S. Pension | Fair Value, Inputs, Level 3 [Member] | Fixed Income Securities [Member] | Common/Collective Trust Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	140.5	$ 140.5
International Pension | Equity Securities [Member] | Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	17.3
International Pension | Equity Securities [Member] | Common Stock Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	15.7
International Pension | Equity Securities [Member] | Common Stock Mid Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1.6
International Pension | Equity Securities [Member] | Mutual Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	21.5
International Pension | Equity Securities [Member] | Real Estate Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	10.2
International Pension | Fixed Income Securities [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	9.7
International Pension | Fixed Income Securities [Member] | US Treasury and Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1.5
International Pension | Fixed Income Securities [Member] | Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	30.1
International Pension | Fixed Income Securities [Member] | Mutual Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	40.5
International Pension | Other Holdings [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	9.7
International Pension | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	129.1
International Pension | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] | Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	17.3
International Pension | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] | Common Stock Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	15.7
International Pension | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] | Common Stock Mid Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1.6
International Pension | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] | Mutual Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	21.5
International Pension | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] | Real Estate Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	8.4
International Pension | Fair Value, Inputs, Level 1 [Member] | Fixed Income Securities [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	9.7
International Pension | Fair Value, Inputs, Level 1 [Member] | Fixed Income Securities [Member] | US Treasury and Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1.5
International Pension | Fair Value, Inputs, Level 1 [Member] | Fixed Income Securities [Member] | Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	30.1
International Pension | Fair Value, Inputs, Level 1 [Member] | Fixed Income Securities [Member] | Mutual Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	40.5
International Pension | Fair Value, Inputs, Level 1 [Member] | Other Holdings [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.1
International Pension | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	11.4
International Pension | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | Common Stock Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | Common Stock Mid Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | Mutual Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | Real Estate Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1.8
International Pension | Fair Value, Inputs, Level 2 [Member] | Fixed Income Securities [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 2 [Member] | Fixed Income Securities [Member] | US Treasury and Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 2 [Member] | Fixed Income Securities [Member] | Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 2 [Member] | Fixed Income Securities [Member] | Mutual Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 2 [Member] | Other Holdings [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	9.6
International Pension | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] | Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] | Common Stock Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] | Common Stock Mid Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] | Mutual Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] | Real Estate Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 3 [Member] | Fixed Income Securities [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 3 [Member] | Fixed Income Securities [Member] | US Treasury and Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 3 [Member] | Fixed Income Securities [Member] | Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 3 [Member] | Fixed Income Securities [Member] | Mutual Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.0
International Pension | Fair Value, Inputs, Level 3 [Member] | Other Holdings [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 0.0