Share-Based and Other Deferred Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Acquisition-Related [Member]

Summary of Activity Related to Share-Based Payment Awards

The following table summarizes activity related to Acquisition-related Awards during the year ended December 31, 2013:

	Acquisition-related Awards
	Number of Shares		Grant Date Weighted Average Fair Value
Unvested Balance at January 1, 2013	1,719		$	39,338
Granted	27		1,221
Vested	(619	)	(14,395		)
Unvested Balance at December 31, 2013	1,127		$	26,164

Equity Grants [Member]

Summary of Activity Related to Share-Based Payment Awards

The following table summarizes activity related to Service-based Awards, which includes RSUs as well as LP Units, during the year ended December 31, 2013:

	Service-based Awards
	Number of Shares		Grant Date Weighted Average Fair Value
Unvested Balance at January 1, 2013	7,972		$	196,868
Granted	2,398		75,229
Forfeited	(60	)	(1,789		)
Vested	(3,630	)	(88,706		)
Unvested Balance at December 31, 2013	6,680		$	181,602