Subsequent Events - Multi-Year Outperformance Plan Agreement (Details) (Subsequent Event, Performance Shares, New Multi-Year Outperformance Plan)	0 Months Ended
	Apr. 15, 2014
Subsequent Event [Line Items]
Performance based award percentage, as Percentage of the company's market capitalization	5.00%
Share-based payment award, award vesting rights	33.33%
Distribution Entitlement Percentage	10.00%
Excess Return, Above Threshold | Absolute Component
Subsequent Event [Line Items]
Shares authorized, percentage of benchmark	4.00%
Excess Return, Above Threshold | Annual Period | Absolute Component
Subsequent Event [Line Items]
Return percentage threshold	7.00%
Excess Return, Above Threshold | Interim Period | Absolute Component
Subsequent Event [Line Items]
Return percentage threshold	14.00%
Excess Return, Above Threshold | Maximum | Performance Period | Absolute Component
Subsequent Event [Line Items]
Return percentage threshold	21.00%
100 Percent Cumulative Threshold | Performance Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	18.00%
100 Percent Cumulative Threshold | Annual Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	6.00%
100 Percent Cumulative Threshold | Interim Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	12.00%
50% Component Threshold | Performance Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	0.00%
50% Component Threshold | Annual Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	0.00%
50% Component Threshold | Interim Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	0.00%
0% Cumulative Threshold | Performance Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	0.00%
0% Cumulative Threshold | Annual Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	0.00%
0% Cumulative Threshold | Interim Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	0.00%
Excess Return, Above Peer Group | Relative Component
Subsequent Event [Line Items]
Shares authorized, percentage of benchmark	4.00%
Cumulative Return, Above Threshold | Relative Component
Subsequent Event [Line Items]
Shares awarded as a percentage of maximum	100.00%
Cumulative Return, Above Threshold | Minimum | Performance Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	0.00%
Cumulative Return, Above Threshold | Minimum | Annual Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	0.00%
Cumulative Return, Above Threshold | Minimum | Interim Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	0.00%
Cumulative Return, Above Threshold | Maximum | Performance Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	18.00%
Cumulative Return, Above Threshold | Maximum | Annual Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	6.00%
Cumulative Return, Above Threshold | Maximum | Interim Period | Relative Component
Subsequent Event [Line Items]
Return percentage threshold	12.00%
Cumulative Return, Equal to Threshold | Relative Component
Subsequent Event [Line Items]
Shares awarded as a percentage of maximum	50.00%
Cumulative Return, Below Threshold | Relative Component
Subsequent Event [Line Items]
Shares awarded as a percentage of maximum	0.00%
Advisor
Subsequent Event [Line Items]
Granted (in shares)	8,880,579