Shareholders' Equity Shareholders' Equity, Treasury Stock (Details) (USD $) Share data in Thousands	9 Months Ended
	Sep. 30, 2011
Treasury Stock [Roll Forward]
Beginning Balance, Treasury Stock	$ 0
Beginning Balance, Treasury Stock (shares)	0
Purchases	309,000,000	[1]
Purchases (shares)	37,712	[1]
Cancellations	0
Cancellations (shares)	0
Ending Balance, Treasury Stock	309,000,000
Ending Balance, Treasury Stock (shares)	37,712
Fees Associated With Repurchase of Stock	$ 1,000,000

[1] Includes associated fees of $1.