Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 30, 2016	Dec. 25, 2015	Sep. 30, 2016
Income Taxes [Line Items]
Increase (Decrease), Deferred Tax Liability, Other	$ (2.6)
Income tax benefit	(121.7)	$ (37.3)
Increase (Decrease) Tax Benefit, Jurisdiction Rate Difference	77.9	123.0
Increase (decrease) Tax benefit, Loss on impairment	75.3
Increase (Decrease) Tax Expense (Benefit), Change in Operating Income	(59.9)
Increase (decrease) tax expense (benefit) due to acquisitions and other	(18.0)
Deferred Tax Liabilities, Net, Noncurrent	2,398.1		$ 2,581.4
Increase (Decrease) Deferred Tax Liability Resulting From Installment Sale Transaction	(84.0)
Increase (decrease), Deferred tax liability due to amortization of net operating losses	(51.6)
Increase (decrease), Deferred tax liability due to legal settlement	(36.6)
Increase (Decrease), Deferred Tax Liability Due to Amortization of Intangible Assets	(13.7)
Increase (decrease) Tax benefit, Uncertain tax positions		3.3
Increase (decrease) Tax benefit, US Tax Credits		3.6
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount		(45.1)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	$ (298.5)	$ 66.5
Effective tax rate	40.80%	(56.10%)
Increase (decrease) Tax benefit, Investment in partnership	$ 12.7
Deferred Tax Assets, Valuation Allowance	1,398.3		564.9
Unrecognized tax benefits	118.7		114.8
Unrecognized tax benefits, net increase	3.9
Unrecognized tax benefits, net decreases related to prior period tax positions	(1.1)
Unrecognized tax benefits, additions related to current year tax positions	5.0
Unrecognized tax benefits, which if favorably settled would benefit the effective tax rate	116.9
Interest accrued on unrecognized tax benefits	7.1		$ 7.2
Unrecognized tax benefits that would impact effective tax rate, upper bound of change	13.5
Income tax penalties and interest accrued that would impact effective tax rate, upper bound of change	4.9
Nuclear Imaging
Income Taxes [Line Items]
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount	4.4	$ 1.9
Discontinued operation, income tax (benefit) expense	15.3	$ 5.2
Generics and API [Member]
Income Taxes [Line Items]
Goodwill, Impairment Loss	207.0
Foreign Tax Authority [Member]
Income Taxes [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards	1,074.7
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration	954.2
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	120.5
U.S. Federal and State Jursidictions [Member]
Income Taxes [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	$ 89.6