Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
OPERATING ACTIVITIES
Net income	$ 206.9	$ 157.7
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	14.4	13.6
Amortization of discounts and fees	1.3	1.4
Stock based compensation expense	9.3	10.4
Excess income tax benefit from employee stock awards	(0.5)	(2.2)
Deferred income taxes	8.3	13.4
Inventory and land option charges	2.3	2.0
Changes in operating assets and liabilities:
Increase in construction in progress and finished homes	(246.3)	(290.3)
(Increase) decrease in residential land and lots – developed, under development, held for development and held for sale	(152.6)	8.4
(Increase) decrease in other assets	(4.9)	30.2
Decrease in mortgage loans held for sale	105.7	106.6
Increase (decrease) in accounts payable, accrued expenses and other liabilities	22.8	(52.7)
Net cash used in operating activities	(33.3)	(1.5)
INVESTING ACTIVITIES
Purchases of property and equipment	(22.2)	(20.1)
Increase in restricted cash	(6.0)	0.0
Net principal decrease (increase) of other mortgage loans and real estate owned	1.0	(2.1)
Payments related to acquisition of a business	(4.1)	0.0
Net cash used in investing activities	(31.3)	(22.2)
FINANCING ACTIVITIES
Repayment of notes payable	(54.3)	(81.0)
Proceeds from stock associated with certain employee benefit plans	2.8	17.0
Excess income tax benefit from employee stock awards	0.5	2.2
Cash dividends paid	(37.3)	(29.6)
Net cash used in financing activities	(88.3)	(91.4)
DECREASE IN CASH AND CASH EQUIVALENTS	(152.9)	(115.1)
Cash and cash equivalents at beginning of period	1,303.2	1,383.8
Cash and cash equivalents at end of period	1,150.3	1,268.7
Supplemental disclosures of non-cash activities:
Notes payable issued for inventory	0.0	2.9
Stock issued under employee incentive plans	$ 7.1	$ 8.1