Fair Value Disclosures

3 Months Ended

Mar. 31, 2012

Fair Value Disclosures [Abstract]

Fair Value Disclosures

14. Fair Value Disclosures

Recurring Fair Value Disclosures. The following table presents information about our financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2012 and December 31, 2011 under the fair value hierarchy discussed in Footnote 2, "Summary of Significant Accounting Policies and Recent Accounting Pronouncements."

Assets and Liabilities Measured at Fair Value on a Recurring Basis

	March 31, 2012								December 31, 2011
(in millions)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets
Deferred compensation plan investments (1)	$	40.0	$	—	$	—	$	40.0	$	41.0	$	—	$	—	$	41.0
Derivative financial instruments	—		—		—		—		—		0.1		—		0.1
Liabilities
Derivative financial instruments	$	—	$	11.6	$	—	$	11.6	$	—	$	16.6	$	—	$	16.6

(1) The balance at March 31, 2012 also reflects approximately $9.3 million of participant withdrawals from our deferred compensation plan investment during the quarter.

Financial Instrument Fair Value Disclosures. As of March 31, 2012 and December 31, 2011, the carrying values of cash and cash equivalents, accounts receivable, accounts payable, accrued expenses and distributions payable represent fair value because of the short-term nature of these instruments. The carrying value of restricted cash approximates its fair value based on the nature of our assessment of the ability to recover these amounts. Due to the short-term nature of these instruments, Level 1 and Level 2 inputs are utilized to estimate the fair value of these financial instruments.

The following table presents the carrying and estimated fair value of our notes payable at March 31, 2012 and December 31, 2011:

	March 31, 2012				December 31, 2011
(in millions)	Carrying Value		Estimated Fair  Value		Carrying Value		Estimated Fair  Value
Fixed rate notes payable	$	2,185.9	$	2,309.1	$	2,186.6	$	2,304.4
Floating rate notes payable	245.2		233.1		245.5		233.6

Non-recurring Fair Value Disclosures. There were no events during the three months ended March 31, 2012 or 2011 which required fair value adjustments of our non-financial assets and non-financial liabilities.