Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
OPERATING ACTIVITIES
Net income	$ 602.6	$ 511.8
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	41.4	39.7
Amortization of discounts and fees	4.1	4.1
Stock based compensation expense	36.8	31.7
Excess income tax benefit from employee stock awards	(6.3)	(7.3)
Deferred income taxes	46.7	20.7
Inventory and land option charges	16.0	34.0
Gain on sale of debt securities collateralized by residential real estate	(4.5)	0.0
Changes in operating assets and liabilities:
Increase in construction in progress and finished homes	(879.1)	(252.1)
Decrease (increase) in residential land and lots – developed, under development, held for development and held for sale	151.3	(120.7)
Increase in other assets	(4.6)	(3.2)
Increase in mortgage loans held for sale	(3.5)	(91.5)
Increase in accounts payable, accrued expenses and other liabilities	87.7	21.4
Net cash provided by operating activities	88.6	188.6
INVESTING ACTIVITIES
Purchases of property and equipment	(65.2)	(43.3)
Increase in restricted cash	(2.1)	(1.7)
Net principal decrease (increase) of other mortgage loans and real estate owned	4.3	(6.3)
Proceeds from sale (purchases) of debt securities collateralized by residential real estate	35.8	(14.8)
Payments related to acquisition of a business	0.0	(68.7)
Net cash used in investing activities	(27.2)	(134.8)
FINANCING ACTIVITIES
Proceeds from notes payable	26.3	1,560.8
Repayment of notes payable	(543.9)	(1,433.5)
Proceeds from stock associated with certain employee benefit plans	61.8	24.0
Excess income tax benefit from employee stock awards	6.3	7.3
Cash dividends paid	(88.9)	(68.6)
Net cash (used in) provided by financing activities	(538.4)	90.0
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(477.0)	143.8
Cash and cash equivalents at beginning of period	1,383.8	661.8
Cash and cash equivalents at end of period	906.8	805.6
Supplemental disclosures of non-cash activities:
Notes payable issued for inventory	4.2	8.1
Stock issued under employee incentive plans	19.9	8.3
Accrual for holdback payment related to acquisition	$ 0.0	$ 2.0