Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Fair value and carrying values for notes and bonds payable, mortgage notes receivable and notes receivable

The table below details the fair value and carrying values for notes and bonds payable as of December 31, 2016 and 2015.

	December 31, 2016				December 31, 2015
(Dollars in millions)	Carrying Value		Fair Value		Carrying Value		Fair Value
Notes and bonds payable (1)	$	1,264.4	$	1,265.1	$	1,425.0	$	1,439.0

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(1) Level 3 - Fair value derived from valuation techniques in which one of more significant inputs or significant value drivers are unobservable.