Discontinued Operations (Details) (USD $)	3 Months Ended								12 Months Ended				0 Months Ended	12 Months Ended																		12 Months Ended					12 Months Ended			0 Months Ended	12 Months Ended	1 Months Ended					3 Months Ended	12 Months Ended	1 Months Ended		12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2012 Appraisal Management [Member]	Dec. 22, 2010 Employer And Litigation Services [Member]	Dec. 31, 2012 Employer And Litigation Services [Member]	Dec. 31, 2012 Discontinued Operations FAFC [Member]	Dec. 31, 2011 Discontinued Operations FAFC [Member]	Dec. 31, 2010 Discontinued Operations FAFC [Member]	Dec. 31, 2012 Discontinued Operations Employer And Litigation Services Businesses [Member]	Dec. 31, 2011 Discontinued Operations Employer And Litigation Services Businesses [Member]	Dec. 31, 2010 Discontinued Operations Employer And Litigation Services Businesses [Member]	Dec. 31, 2012 Discontinued Operations Marketing [Member] Data and Analytics [Member]	Dec. 31, 2011 Discontinued Operations Marketing [Member] Data and Analytics [Member]	Dec. 31, 2010 Discontinued Operations Marketing [Member] Data and Analytics [Member]	Dec. 31, 2012 Discsontinued Operations Consumer [Member] Data and Analytics [Member]	Dec. 31, 2011 Discsontinued Operations Consumer [Member] Data and Analytics [Member]	Dec. 31, 2010 Discsontinued Operations Consumer [Member] Data and Analytics [Member]	Dec. 31, 2012 Discontinued Operations Appraisal [Member]	Dec. 31, 2011 Discontinued Operations Appraisal [Member]	Dec. 31, 2010 Discontinued Operations Appraisal [Member]	Dec. 31, 2012 Discontinued Operations Appraisal [Member] Mortgage Origination Services [Member]	Dec. 31, 2011 Discontinued Operations Appraisal [Member] Mortgage Origination Services [Member]	Dec. 31, 2012 Discontinued Operations Transportation [Member]	Dec. 31, 2011 Discontinued Operations Transportation [Member]	Dec. 31, 2010 Discontinued Operations Transportation [Member]	Dec. 31, 2012 Discontinued Operations Transportation [Member] Asset Management and Processing Solutions [Member]	Dec. 31, 2011 Discontinued Operations Transportation [Member] Asset Management and Processing Solutions [Member]	Dec. 31, 2012 Components Total [Member]	Dec. 31, 2011 Components Total [Member]	Dec. 31, 2010 Components Total [Member]	Aug. 31, 2012 Disposition of Transportation Services Business [Member]	Dec. 31, 2012 Disposition of Transportation Services Business [Member]	Sep. 30, 2011 Total Impairment Charges [Member]	Sep. 30, 2011 Impairment of Intangible Assets [Member] Marketing Services Unit [Member]	Sep. 30, 2011 Impairment of Intangible Assets [Member] 8741 Services, Management Services [Member]	Sep. 30, 2011 Impairment of Intangible Assets [Member] 4700 Transportation Services [Member]	Sep. 30, 2011 Impairment of Intangible Assets [Member] Consumer Services [Member]	Mar. 31, 2012 Impairment of Intangible Assets [Member] Discontinued Operations Appraisal [Member]	Dec. 31, 2011 Non Cash Impairment [Member] Marketing Services Unit [Member]	Sep. 30, 2011 Allowance for Doubtful Accounts [Member] Marketing Services Unit [Member]	Sep. 30, 2011 Gain (Loss) on Disposition of Other Assets [Member] Marketing Services Unit [Member]	Dec. 31, 2010 Impairment of Goodwill [Member] Employer And Litigation Services [Member]	Dec. 31, 2011 Impairment of Intangible Assets [Member] Non Cash Impairment [Member] Marketing Services Unit [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain/(loss) from sale of discontinued operations, net of tax	$ (5,435,000)	$ 12,264,000	$ 466,000	$ (3,454,000)					$ 3,841,000	$ 0	$ (18,985,000)																													$ 11,000,000
Gain/(loss) from sale of discontinued operations, net of tax													(34,500,000)																												3,900,000
Noncontrolling Interest, Ownership Percentage by Parent	100.00%								100.00%			100.00%
Discontinued operations, non-cash impairment charge																																										137,700,000	123,300,000	8,300,000	3,600,000	2,600,000	13,900,000	10,600,000	8,900,000	1,800,000	174,000,000	17,100,000
Prior period adjustment, increase to provision for income taxes, discontinued operations									4,100,000
Proceeds from divestiture of businesses													265,000,000
Statement of Financial Position [Abstract]
Current assets																0			0			3,380,000			14,833,000						1,038,000					13,252,000		32,503,000
Property and equipment, net					3,000,000					3,000,000						0			0			0			114,000						911,000					1,967,000		2,992,000
Goodwill and other identifiable intangible assets, net																0			0			0			2,109,000						13,959,000					3,845,000		19,913,000
Other assets																0			0			0			0						0					108,000		108,000
Total assets															0	0		0	0		204,000	3,380,000		251,000	17,056,000					337,000	15,908,000				2,000	19,172,000	794,000	55,516,000
Total liabilities															0	0		0	0		776,000	(2,210,000)		691,000	11,849,000					1,920,000	10,907,000				(35,000)	6,853,000	3,352,000	27,399,000
Income Statement [Abstract]
Operating revenue															0	0	1,490,501,000	0	0	242,895,000	0	29,399,000	44,221,000	55,773,000	94,755,000	89,573,000	25,137,000	69,890,000	141,856,000			46,435,000	66,115,000	67,346,000			127,345,000	260,159,000	2,076,392,000
(Loss)/income from discontinued operations before income taxes															0	0	76,323,000	0	0	(166,064,000)	(122,000)	(164,094,000)	(11,777,000)	5,026,000	(10,453,000)	11,950,000	(21,375,000)	(20,178,000)	8,304,000			(1,786,000)	(2,472,000)	1,432,000			(18,257,000)	(197,197,000)	(79,832,000)
(Benefit)/provision for income taxes															0	0	33,222,000	0	0	(27,433,000)	4,891,000	(61,947,000)	(10,340,000)	15,000	(2,205,000)	4,780,000	(5,186,000)	(6,172,000)	3,321,000			(2,921,000)	251,000	573,000			(3,201,000)	(70,073,000)	4,123,000
(Loss)/income, net of tax									(15,056,000)	(127,124,000)	(83,536,000)		(19,000,000)	(3,500,000)	0	0	43,101,000	0	0	(138,631,000)	(5,013,000)	(102,147,000)	(1,437,000)	5,011,000	(8,248,000)	7,170,000	(16,189,000)	(14,006,000)	4,983,000			1,135,000	(2,723,000)	859,000			(15,056,000)	(127,124,000)	(83,955,000)
Less: Net income attributable to noncontrolling interests																	(419,000)			0			0			0			0					0					(419,000)
(Loss)/income from discontinued operations, net of tax	$ 3,085,000	$ (10,157,000)	$ 983,000	$ (8,967,000)	$ (15,999,000)	$ (104,220,000)	$ (8,556,000)	$ 1,651,000	$ (15,056,000)	$ (127,124,000)	$ (83,536,000)				$ 0	$ 0	$ 43,520,000	$ 0	$ 0	$ (138,631,000)	$ (5,013,000)	$ (102,147,000)	$ (1,437,000)	$ 5,011,000	$ (8,248,000)	$ 7,170,000	$ (16,189,000)	$ (14,006,000)	$ 4,983,000			$ 1,135,000	$ (2,723,000)	$ 859,000			$ (15,056,000)	$ (127,124,000)	$ (83,536,000)