Consolidated Statements of Income (Parenthetical) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Intangible Assets (Excluding Goodwill) [Line Items]
Amortization of intangible assets	$ 194.8	$ 166.7
Impairment of unamortized intangible assets	71.2	16.0	0
Favorable Manufacturing Contract
Intangible Assets (Excluding Goodwill) [Line Items]
Amortization of intangible assets	0.7	1.7	1.7
Acquired Intellectual Property Rights
Intangible Assets (Excluding Goodwill) [Line Items]
Amortization and impairment charges of intangible assets	320.8	165.0	176.2
Impairment charges, amortizing intangible assets	$ 126.7	$ 0	$ 42.7