Senior and Subordinated Debt (Details 1) (USD $) In Thousands, unless otherwise specified	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Jan. 31, 2013	Jan. 31, 2012
Interest incurred, capitalized and paid
Interest incurred	$ 309,017	$ 357,388	$ 435,288
Interest capitalized	(16,693)	(96,094)	(193,448)
Net interest expense	292,324	261,294	241,840
Interest incurred from discontinued operations	4,733	15,197	22,134
Cash paid for interest (net of amount capitalized)	$ 292,692	$ 291,509	$ 260,822