Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2015

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, 2015 and December 31, 2014 using the inputs and 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, 2015								December 31, 2014
(in millions)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets
Deferred compensation plan investments (1)	$	51.6	$	—	$	—	$	51.6	$	56.1	$	—	$	—	$	56.1

(1) Approximately $8.3 million of participant cash was withdrawn from our deferred compensation plan investments during the nine months ended September 30, 2015.

Fair Value Of Notes Payable

The following table presents the carrying and estimated fair values of our notes payable at September 30, 2015 and December 31, 2014, in accordance with the policies discussed in Note 2, "Summary of Significant Accounting Policies and Recent Accounting Pronouncements."

	September 30, 2015				December 31, 2014
(in millions)	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
Fixed rate notes payable	$	2,283.7	$	2,380.3	$	2,533.8	$	2,666.1
Floating rate notes payable (1)	431.5		423.6		209.7		203.7

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