Share-Based Compensation (Summary Of Restricted Stock) (Details) (USD $)	9 Months Ended
	Sep. 30, 2011
PSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested, beginning balance	1,098,629
Stock, granted	651,510	[1]
Stock, vested	(67,057)
Stock, forfeited	(149,128)
Unvested, ending balance	1,533,954
Unvested, fair value, beginning of period	$ 24.25
Weighted-Average Grant Date Fair Value, Granted	$ 25.15
Weighted-Average Grant Date Fair Value, Vested	$ 35.94
Weighted-Average Grant Date Fair Value, Forfeited	$ 28.07
Unvested, fair value, end of period	$ 23.75
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested, beginning balance	2,759,091
Stock, granted	1,378,531	[2]
Stock, vested	(321,834)
Stock, forfeited	(394,922)
Unvested, ending balance	3,420,866
Unvested, fair value, beginning of period	$ 22.00
Weighted-Average Grant Date Fair Value, Granted	$ 25.32
Weighted-Average Grant Date Fair Value, Vested	$ 24.39
Weighted-Average Grant Date Fair Value, Forfeited	$ 22.24
Unvested, fair value, end of period	$ 23.15

[1] PSUs granted in 2011 primarily reflect awards issued to certain executive officers, as described above.

[2] Restricted stock granted in 2011 primarily reflects our company-wide equity grant issued in March 2011, which includes a performance-based accelerated vesting feature based on achievement of specific levels of corporate performance, as described above.