Stockholders' Equity, Restrited Stock, Stock Options and Noncontrolling Interests (Performance Share Table) (Details) (Long-Term Incentive Plan, PSU, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair Value of Share Based Award	35
Change in Fair Value of Share Based Award	18
Share Based Award Liability, Current	2
Share Based Award Liability, Noncurrent	12
Employee Performance Share Based Compensation, Nonvested Awards, Total Compensation Cost Not Yet Recognized	4
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout Percentage of Component of Share Based Award	0.00%
Payout Percentage of Share Based Award	0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout Percentage of Component of Share Based Award	125.00%
Payout Percentage of Share Based Award	250.00%