Fair Value Of Financial Instruments (Fair Value Of Financial Instruments, Classified Using Three-Level Hierarchy) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 627,208	$ 418,299
Accounts and accrued income receivable, net	259,779	227,847
Loans receivable, net	111,925	144,868
Deposits with savings and loan associations and banks	71,400	56,350
Securities	2,849,801	2,385,911
Notes receivable, net	11,376	14,534
Deposits	1,411,575	1,093,771
Accounts payable and accrued liabilities	337,231	295,351
Due to CoreLogic, net	53,510	35,951
Notes and contracts payable	233,071	304,806
Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities	2,651,881	2,201,911
Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities	197,920	184,000
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	627,208	418,299
Accounts and accrued income receivable, net	259,779	227,847
Deposits with savings and loan associations and banks	49,431	26,624
Securities	197,920	184,000
Deposits	1,373,978	1,049,464
Accounts payable and accrued liabilities	337,231	295,351
Due to CoreLogic, net	53,510	35,951
Level 1 [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities	197,920	184,000
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deposits with savings and loan associations and banks	21,969	29,726
Securities	2,630,035	2,171,277
Deposits	37,597	44,307
Notes and contracts payable	223,218	291,178
Level 2 [Member] | Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities	2,630,035	2,171,277
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, net	111,925	144,868
Securities	21,846	30,634
Notes receivable, net	11,376	14,534
Notes and contracts payable	9,853	13,628
Level 3 [Member] | Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities	$ 21,846	$ 30,634