Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 1,450.7	$ 1,482.2
Restricted cash	19.3	17.1
Accounts receivable, net	884.4	824.2
Inventories	471.4	436.9
Deferred tax asset	224.3	229.9
Prepaid expenses and other current assets	283.2	221.8
Total current assets	3,333.3	3,212.1
Non-current assets:
Investments	39.3	38.7
Property, plant and equipment, net	951.0	955.8
Goodwill	522.8	644.5
Other intangible assets, net	2,657.2	2,388.1
Deferred tax asset	47.3	46.5
Other non-current assets	34.7	31.5
Total assets	7,585.6	7,317.2
Current liabilities:
Accounts payable and accrued expenses	1,477.2	1,501.5
Other current liabilities	142.5	144.1
Total current liabilities	1,619.7	1,645.6
Non-current liabilities
Convertible bonds	1,100.0	1,100.0
Deferred tax liability	607.3	520.8
Other non-current liabilities	476.5	241.6
Total liabilities	3,803.5	3,508.0
Commitments and contingencies
Equity:
Common stock of 5p par value; 1,000 million shares authorized; and 562.8 million shares issued and outstanding (2012: 1,000 million shares authorized; and 562.5 million shares issued and outstanding)	55.7	55.7
Additional paid-in capital	3,002.1	2,981.5
Treasury stock: 11.3 million shares (2012: 10.7 million shares)	(341.6)	(310.4)
Accumulated other comprehensive income	49.1	86.9
Retained earnings	1,016.8	995.5
Total equity	3,782.1	3,809.2
Total liabilities and equity	$ 7,585.6	$ 7,317.2