Share-Based and Long-Term Compensation Plans (Details) (USD $)	6 Months Ended				6 Months Ended		6 Months Ended		6 Months Ended								6 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Stock Options [Member]	Dec. 31, 2012 Stock Options [Member]	Jun. 30, 2013 Restricted Stock Units (RSUs) [Member]	Dec. 31, 2012 Restricted Stock Units (RSUs) [Member]	Jun. 30, 2013 Profits Interest Units [Member]	Dec. 31, 2012 Profits Interest Units [Member]	Jun. 30, 2013 Profits Interest Units [Member] Subsequent Event [Member]	Jun. 30, 2013 Restricted Stock [Member]	Dec. 31, 2012 Restricted Stock [Member]	Jun. 30, 2013 Deferred Incentive Share Units [Member]	Dec. 31, 2012 Deferred Incentive Share Units [Member]	Jun. 30, 2013 2013 Equity Plan [Member]	Jun. 30, 2013 2013 Equity Plan [Member] Stock Options and Stock Appreciation Right [Member]	Jun. 30, 2013 2013 Equity Plan [Member] All Other Awards [Member]	Jun. 30, 2013 2013 Equity Plan [Member] Stock Options [Member]	Jun. 30, 2013 2013 Equity Plan [Member] Restricted Stock Units (RSUs) [Member]	Jun. 30, 2013 2013 Equity Plan [Member] Profits Interest Units [Member]	Jun. 30, 2013 2010 Equity Plan [Member] Restricted Stock [Member]	Jun. 30, 2013 2010 Equity Plan [Member] Deferred Incentive Share Units [Member]	Jun. 30, 2013 Time [Member] Restricted Stock Units (RSUs) [Member] Subsequent Event [Member]	Jun. 30, 2013 Time [Member] 2013 Equity Plan [Member] Restricted Stock Units (RSUs) [Member]	Jun. 30, 2013 Performance [Member] 2013 Equity Plan [Member] Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized														3,250,000	2,000,000	1,250,000
Number of shares granted for stock options			1,850,000														1,850,000
Number of shares outstanding for stock options (in shares)			1,850,000	0													1,850,000
Value of shares outstanding for stock options																	$ 7,700,000
Weighted average price per share outstanding (dollars per share)			$ 4,170	$ 0													$ 4.17
Number of units granted (in shares)	0				173,947,000		114,443,000		100,000										114,443	32,581	17,235	100,000	115,350	58,597
Number of units outstanding					173,947,000	0	114,443,000	0		32,581,000	281,233,000	17,235,000	17,760,000					115,350	114,443	32,581	17,235
Value of units outstanding																			1,200,000	482,000	356,000		2,200,000	615,000
Weighted average price per unit outstanding (dollars per share)					$ 16,300	$ 0	$ 10,600	$ 0		$ 14.78	$ 8.34	$ 20.66	$ 25.61						$ 10.60	$ 14.78	$ 20.66		$ 19.25	$ 10.50
Vesting period (in years)																				4 years	4 years
Share-based compensation expense	1,300,000	204,000
Non-vested awards compensation expense not yet recognized	$ 11,300,000
Share-based compensation award vesting rights	25% per year on each of the first, second, third and fourth anniversaries																					33% per year on each of the first, second and third anniversaries
Period of performance goals (in years)	3 years