Fair Value Disclosures Fair Value Disclosures (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Disclosed at fair value:
Senior notes	$ 1,662,206	$ 1,952,774
Level 2
Disclosed at fair value:
Financial Services debt	107,508	140,241
Loans Payable, Fair Value Disclosure	500,000	0
Level 1
Disclosed at fair value:
Cash and equivalents (including restricted cash)	760,095	1,309,220
Fair Value, Measurements, Nonrecurring | Level 3
Measured at fair value on a non-recurring basis:
Assets, Fair Value Disclosure, Nonrecurring	1,262	13,925
Interest rate lock commitments | Fair Value, Measurements, Recurring | Level 2
Measured at fair value on a recurring basis:
Assets, Fair Value Disclosure, Recurring	11,022	4,248
Forward contracts | Fair Value, Measurements, Recurring | Level 2
Measured at fair value on a recurring basis:
Liabilities, Fair Value Disclosure, Recurring	(4,712)	(3,574)
Whole loan commitments | Fair Value, Measurements, Recurring | Level 2
Measured at fair value on a recurring basis:
Liabilities, Fair Value Disclosure, Recurring	(407)	(588)
Residential Mortgage | Fair Value, Measurements, Recurring | Level 2
Measured at fair value on a recurring basis:
Assets, Fair Value Disclosure, Recurring	$ 270,658	$ 339,531