Special Charges (Summary Of Activity Related To Special Charge Restructuring Accrual) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]
Balance at beginning	$ 77
Special charges, intangible asset impairment charges		52
Special charges	70	219
Non-cash charges used	(9)	(99)
Cash payments	(35)	(42)
Foreign exchange rate impact		(1)
Balance at ending	103	77
Employee Termination Costs [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	54
Special charges, severance and benefit costs	16	82
Cash payments	(20)	(27)
Foreign exchange rate impact		(1)
Balance at ending	50	54
Inventory Charges [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, inventory obsolescence charges	9	20
Non-cash charges used	(9)	(20)
Fixed Asset Charges [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, fixed asset impairment charges		26.0
Non-cash charges used		(26)
Intangible Asset Charges [Member]
Restructuring Cost and Reserve [Line Items]
Special charges, intangible asset impairment charges		52
Non-cash charges used		(52)
Other [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning	23
Special charges, other	45	39
Non-cash charges used		(1)
Cash payments	(15)	(15)
Balance at ending	$ 53	$ 23