Valuation and Qualifying Accounts (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Allowance for Doubtful Accounts Receivable [Member]
Balance at Beginning of Period	$ 138.4		$ 148.8		$ 132.4
Charged to Costs and Expenses	251.1		247.2		215.7
Charged to Revenue	0		0		0
Deductions	255.2	[1]	257.6	[1]	199.3	[1]
Balance at End of Period	134.3		138.4		148.8
Allowance for Sales Returns [Member]
Balance at Beginning of Period	36.1		83.2		32.7
Charged to Costs and Expenses	0		0		0
Charged to Revenue	390.2		446.5		424.1
Deductions	399.2	[2]	493.7	[2]	373.6	[2]
Balance at End of Period	27.1		36.1		83.2
Allowance for Inventory Obsolescence [Member]
Balance at Beginning of Period	151.6		126.7		114.9
Charged to Costs and Expenses	122.1		128.1		131.1
Charged to Revenue	0		0		0
Deductions	102.4	[3]	103.2	[3]	119.3	[3]
Balance at End of Period	171.3		151.6		126.7
Deferred Tax Asset Valuation Allowance [Member]
Balance at Beginning of Period	546.1		462.7		370.2
Charged to Costs and Expenses	81.3	[4]	83.4	[4]	92.5	[4]
Charged to Revenue	0		0		0
Deductions	0		0		0
Balance at End of Period	$ 627.4		$ 546.1		$ 462.7

[1] Accounts written off, net of recoveries and foreign currency translation adjustment.

[2] Returned product destroyed and foreign currency translation adjustment.

[3] Obsolete inventory destroyed and foreign currency translation adjustment.

[4] Increase in valuation allowance primarily for tax loss carryforward benefits that are not more likely than not to be realized in the future.