Financial Instruments and Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2011

Financial Instruments and Fair Value Measurements [Abstract]

Derivative activity

	2011					2010
	Interest Rate Swaps			Interest Rate Caps		Interest Rate Swaps			Interest Rate Caps
Notional amounts at January 1	$	268.1		$	—	$	157.7		$	—
Acquired contracts (1)		1,337.3			25.7		155.0			—
Matured or expired contracts		(9.6	)		—		(44.6	)		—
Notional amounts at September 30	$	1,595.8		$	25.7	$	268.1		$	—

(1) To the extent these contracts previously qualified for hedge accounting, they were redesignated at the time of the Merger or PEPR acquisition to qualify for hedge accounting post merger and acquisition.

Fair value of financial instruments

	September 30, 2011				December 31, 2010
	Carrying Value		Fair Value		Carrying Value		Fair Value
Debt:
Credit Facilities	$	1,354,323	$	1,354,563	$	520,141	$	526,684
Senior notes		4,778,782		4,882,028		3,195,724		3,403,353
Exchangeable senior notes		1,351,267		1,435,600		1,521,568		1,591,976
Secured mortgage debt		2,035,660		2,166,378		1,249,729		1,320,084
Secured mortgage debt of consolidated investees		1,371,885		1,385,002		—		—
Other debt of consolidated investees		859,254		825,333		—		—
Other debt		396,106		396,870		18,867		17,995
Total debt	$	12,147,277	$	12,445,774	$	6,506,029	$	6,860,092