Fair Value Disclosures (Tables)

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Financial Assets And Liabilities Measured At Fair Value

The following table presents information about our financial instruments measured at fair value on a recurring basis as of September 30, 2013 and December 31, 2012 under the fair value hierarchy discussed in Note 2, "Summary of Significant Accounting Policies and Recent Accounting Pronouncements."

Financial Instruments Measured at Fair Value on a Recurring Basis

	September 30, 2013								December 31, 2012
(in millions)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets
Deferred compensation plan investments (1)	$	40.8	$	—	$	—	$	40.8	$	35.0	$	—	$	—	$	35.0

(1) Approximately $1.2 million of participant cash was withdrawn from our deferred compensation plan investments during the nine months ended September 30, 2013.

Fair Value Of Notes Receivable And Notes Payable

The following table presents the carrying and estimated fair values of our notes payable at September 30, 2013 and December 31, 2012:

	September 30, 2013				December 31, 2012
(in millions)	Carrying Value		Estimated Fair  Value		Carrying Value		Estimated Fair  Value
Fixed rate notes payable	$	2,270.4	$	2,366.3	$	2,297.8	$	2,518.1
Floating rate notes payable (1)	394.6		384.7		212.7		203.4

(1) Includes balances outstanding under our unsecured line of credit and short-term borrowings.