Equity-Based Compensation (Summary Of Unit-Based Awards) (Details) (USD $)	12 Months Ended			0 Months Ended	12 Months Ended
	Dec. 31, 2013 Service Restricted Units [Member]	Dec. 31, 2012 Service Restricted Units [Member]	Dec. 31, 2011 Service Restricted Units [Member]	Apr. 22, 2013 Performance Restricted Units [Member]	Dec. 31, 2013 Performance Restricted Units [Member]	Dec. 31, 2012 Performance Restricted Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested units, Beginning balance	550,241,000	271,364,000	148,160,000		118,082,000
Granted, units	491,847,000	437,211,000	214,588,000	149,000	149,407,000	121,137,000
Forfeited, units	(68,806,000)	(61,444,000)	(38,586,000)			(3,055,000)
Vested, units	(218,460,000)	(96,890,000)	(52,798,000)
Unvested units, Ending balance	754,822,000	550,241,000	271,364,000		267,489,000	118,082,000
Weighted average grant date fair value, Beginning balance	$ 18.80	$ 20.26	$ 20.03		$ 10.34
Weighted average grant date fair value, granted	$ 17.97	$ 18.22	$ 20.51		$ 10.03	$ 10.35
Weighted average grant date fair value, forfeited	$ 18.41	$ 19.47	$ 20.75			$ 10.45
Weighted average grant date fair value, vested	$ 19.01	$ 20.05	$ 20.31
Weighted average grant date fair value, Ending balance	$ 18.22	$ 18.80	$ 20.26		$ 10.17	$ 10.34