Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income	$ 74,819	$ 81,762
Adjustments to reconcile net income to net cash flows provided by (used in) operating activities:
Deferred income taxes	52,086	0
Depreciation and amortization	5,670	7,339
Stock-based compensation expense	8,522	7,141
Equity in (earnings) loss of unconsolidated entities	(5,891)	898
Distributions of earnings from unconsolidated entities	4,753	265
Loss on debt retirements	8,584	0
Other non-cash, net	3,256	3,035
Increase (decrease) in cash due to:
Restricted cash	(890)	860
Inventories	(68,812)	99,760
Residential mortgage loans available-for-sale	76,357	80,727
Other assets	17,090	(370)
Accounts payable, accrued and other liabilities	(83,943)	(8,795)
Income tax liabilities	(205)	(2,002)
Net cash provided by (used in) operating activities	91,396	270,620
Cash flows from investing activities:
Distributions from unconsolidated entities	6,385	200
Investments in unconsolidated entities	(9)	(593)
Net change in loans held for investment	(6,390)	10
Change in restricted cash related to letters of credit	(1,991)	4,513
Proceeds from the sale of property and equipment	23	59
Capital expenditures	(17,865)	(5,378)
Net cash provided by (used in) investing activities	(19,847)	(1,189)
Cash flows from financing activities:
Financial Services borrowings (repayments)	(69,828)	(82,164)
Other borrowings (repayments)	(250,013)	(213)
Stock option exercises	5,295	7,537
Stock repurchases	(50,105)	(6,427)
Dividends paid	(19,065)	0
Net cash provided by (used in) financing activities	(383,716)	(81,267)
Net increase (decrease) in cash and equivalents	(312,167)	188,164
Cash and equivalents at beginning of period	1,580,329	1,404,760
Cash and equivalents at end of period	1,268,162	1,592,924
Supplemental Cash Flow Information:
Interest paid (capitalized), net	(19,556)	(23,095)
Income taxes paid (refunded), net	$ (8,253)	$ (3,026)

Name:	us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.