Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0000915840 (http://www.sec.gov/CIK)

Commitments and Contingencies Disclosure [Abstract]	Period [Axis]
	2015-10-01 - 2016-09-30
Commitments and Contingencies Disclosure [Abstract]
Warranty reserves	Changes in our warranty reserves are as follows for the periods presented:   Fiscal Year Ended September 30, (In thousands) 2016   2015   2014 Balance at beginning of period $ 27,681   $ 16,084   $ 11,663 Accruals for warranties issued (a) 13,835   10,356   6,087 Changes in liability related to warranties existing in prior periods (b) 53,109   30,482   9,836 Payments made (b) (55,494 )   (29,241 )   (11,502 ) Balance at end of period $ 39,131   $ 27,681   $ 16,084 (a) Accruals for warranties issued are a function of the number of home closings in the period, the selling prices of the homes closed and the rates of accrual per home estimated as a percentage of the selling price of the home. The continued increase in the amount of accrual compared to the respective prior year periods is mainly due to an increase in the number of closings and the sales prices of homes closed, as well as increases in certain divisions' accrual rates. (b) Changes in liability related to warranties existing and payments made in all periods, particularly fiscal 2016 and fiscal 2015, are elevated due to charges and subsequent payments related to water intrusion issues in certain of our communities located in Florida (refer to separate discussion below).