Commitments and Contingencies (Commitments and Loss Contingency) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Legal and other proceedings
Provisions for litigation loss, insurance claims and other disputes	$ 85.0	$ 36.9
Clinical Testing
Commitment [Line Items]
Commitment amount	370.8	358.6
Contract Manufacturing
Commitment [Line Items]
Commitment amount	116.5	86.4
Commitments expected to be paid in next year	83.4
Other Purchasing Commitment
Commitment [Line Items]
Commitment amount	171.2	190.1
Commitments expected to be paid in next year	162.9
Investment Commitment
Commitment [Line Items]
Commitment amount	14.5	9.4
Capital Commitment
Commitment [Line Items]
Commitment amount	$ 28.8	$ 25.4