Other Assets and Accrued and Other Liabilities (Other Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other Assets and Accrued and Other Liabilities [Abstract]
Insurance Settlements Receivable	$ 213,407	$ 307,344
Notes receivable	16,768	29,111
Other receivables	76,309	90,714
Accounts and notes receivable	306,484	427,169
Prepaid expenses	116,912	106,748
Deposits and pre-acquisition Costs	207,987	195,436
Property and equipment, net	70,706	77,444
Income taxes receivable	6,964	9,272
Other	36,070	41,357
Other Assets	$ 745,123	$ 857,426