Other Assets and Accrued and Other Liabilities (Other Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Assets and Accrued and Other Liabilities [Abstract]
Self-insurance liabilities	$ 737,013	$ 758,812	$ 831,058	$ 924,563
Compensation-related	161,068	134,008
Warranty	79,154	72,709	66,134	61,179
Accrued interest	52,521	50,620
Loan origination liabilities	50,282	34,641	$ 35,114	$ 46,381
Other	280,445	305,543
Accrued and other liabilities	$ 1,360,483	$ 1,356,333