GOODWILL (Details 2) (USD $)	3 Months Ended
Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2011 Information services	Mar. 31, 2011 Information services	Apr. 02, 2011 US Information Services	Mar. 31, 2011 US Information Services	Apr. 02, 2011 International Information Services	Mar. 31, 2011 Europe Information Services	Mar. 31, 2011 APAC Information Services	Mar. 31, 2011 Brazil Information Services	Jun. 30, 2011 Information products	Mar. 31, 2011 Information products	Apr. 02, 2011 US Information Products	Mar. 31, 2011 US Information Products	Apr. 02, 2011 International Information Products	Mar. 31, 2011 Europe Information Products	Mar. 31, 2011 APAC Information Products
Goodwill information
Goodwill	$ 418,988,000	$ 417,654,000	$ 348,384,000	$ 347,411,000	$ 0	$ 306,300,000	$ 0	$ 13,400,000	$ 10,800,000	$ 16,900,000	$ 70,604,000	$ 70,243,000	$ 0	$ 51,200,000	$ 0	$ 9,100,000	$ 10,000,000
Impairment charge related to goodwill	$ 77,300,000

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e(2)

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 47
-Subparagraph b

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 20

Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration