Corelogic Information Systems [Abstract]

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- Definition

Noncontrolling Interest Change in Ownership Tax Portion

+ Details

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- Definition

Payments To Acquire Interest In Redeemable Noncontrolling Interest

+ Details

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- Definition

Redeemable Noncontrolling Interest Owenership Percentage Agreement

+ Details

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- Definition

Redeemable Noncontrolling Interests [Abstract]

+ Details

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- Definition

Remaining Payments To Acquire Redeemable Noncontrolling Interest

+ Details

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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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- Definition

Change in noncontrolling interest during the period as a result of a change in the redemption value of redeemable noncontrolling interest.

+ Details

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ Details

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Redeemable Noncontrolling Interests (Details) (USD $)	3 Months Ended	6 Months Ended
Redeemable Noncontrolling Interests (Details) (USD $)	Mar. 31, 2011	Jun. 30, 2011	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2010 Subsidiaries [Member]
Experian Information Solutions [Abstract]
Business Acquisition, Cost of Acquired Entity, Purchase Price					$ 313,800,000
Noncontrolling Interest, Change in Redemption Value	4,200,000	(3,800,000)	6,806,000
Noncontrolling Interest Change in Ownership Tax Portion	100,000
Corelogic Information Systems [Abstract]
Redeemable Noncontrolling Interest Owenership Percentage Agreement				18.00%
Noncontrolling Interest, Ownership Percentage by Parent				9.00%
Payments To Acquire Interest In Redeemable Noncontrolling Interest				72,000,000
Remaining Payments To Acquire Redeemable Noncontrolling Interest	$ 72,000,000