Management Compensation Plans (Schedule of Total Shares Available for and Subject to Awards) (Details)	Dec. 31, 2011
Global Incentive Plan 2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for awards	1,781,658
Shares subject to outstanding awards	3,420,463
Stock Incentive Plan 2004 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for awards	0	[1]
Shares subject to outstanding awards	4,319,185	[1]

[1] At the Company's discretion under the 2004 SIP, the Company had the right to award dividend equivalents on RSU grants which are earned in accordance with the Company's common stock dividend policy and are reinvested in additional RSUs. Dividend equivalents on these RSUs are forfeited if vesting conditions are not met.