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Segment and Geographic Information (Details) (USD $) In Millions, unless otherwise specified | 3 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 Segment Country | Dec. 31, 2011 | Dec. 31, 2010
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 1,226 |  | $ 1,116 | $ 1,072 | $ 1,035 | $ 1,004 | $ 971 | $ 1,020 | $ 959 | $ 4,450 |  | $ 3,954 | $ 3,639
Operating Profit |  |  |  |  |  |  |  |  |  | 1,211 |  | 1,077 | 1,026
Depreciation & Amortization |  |  |  |  |  |  |  |  |  | 141 |  | 126 | 108
Capital Expenditures |  |  |  |  |  |  |  |  |  | 97 |  | 92 | 86
Assets held for sale | 1,940 |  |  |  |  | 2,508 |  |  |  | 1,940 |  | 2,508 |
Total assets | 7,052 |  |  |  |  | 6,620 |  |  |  | 7,052 |  | 6,620 |
Segment and Geographic Information (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments |  |  |  |  |  |  |  |  |  | 4 |  |  |
Number of countries in which operations is carried on |  |  |  |  |  |  |  |  |  | 80 |  |  |
Maximum percentage of consolidated revenue represented by foreign countries |  |  |  |  |  |  |  |  |  | 8.00% |  |  |
Maximum percentage of consolidated revenue represented by single customer |  |  |  |  |  |  |  |  |  | 10.00% |  |  |
S&P Ratings [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 2,034 |  | 1,767 | 1,695
Operating Profit |  |  |  |  |  |  |  |  |  | 849 |  | 720 | 762
Depreciation & Amortization |  |  |  |  |  |  |  |  |  | 43 |  | 40 | 37
Capital Expenditures |  |  |  |  |  |  |  |  |  | 43 |  | 40 | 39
Total assets | 726 |  |  |  |  | 667 |  |  |  | 726 |  | 667 |
S&P Capital IQ [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 1,124 |  | 1,031 | 916
Operating Profit |  |  |  |  |  |  |  |  |  | 208 |  | 214 | 171
Depreciation & Amortization |  |  |  |  |  |  |  |  |  | 50 |  | 43 | 28
Capital Expenditures |  |  |  |  |  |  |  |  |  | 22 |  | 21 | 21
Total assets | 1,123 |  |  |  |  | 809 |  |  |  | 1,123 |  | 809 |
S&P Indices [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 388 |  | 323 | 273
Operating Profit |  |  |  |  |  |  |  |  |  | 212 |  | 189 | 144
Depreciation & Amortization |  |  |  |  |  |  |  |  |  | 8 |  | 3 | 3
Capital Expenditures |  |  |  |  |  |  |  |  |  | 2 |  | 2 | 2
Total assets | 1,133 |  |  |  |  | 303 |  |  |  | 1,133 |  | 303 |
C&C [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 973 |  | 896 | 811
Operating Profit |  |  |  |  |  |  |  |  |  | 248 |  | 180 | 153
Depreciation & Amortization |  |  |  |  |  |  |  |  |  | 23 |  | 23 | 22
Capital Expenditures |  |  |  |  |  |  |  |  |  | 17 |  | 14 | 10
Total assets | 1,000 |  |  |  |  | 954 |  |  |  | 1,000 |  | 954 |
Intersegment elimination [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | (69) |  | (63) | (56)
Operating Profit |  |  |  |  |  |  |  |  |  | 0 |  | 0 | 0
Total operating segments [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 4,450 |  | 3,954 | 3,639
Operating Profit |  |  |  |  |  |  |  |  |  | 1,517 |  | 1,303 | 1,230
Depreciation & Amortization |  |  |  |  |  |  |  |  |  | 124 |  | 109 | 90
Capital Expenditures |  |  |  |  |  |  |  |  |  | 84 |  | 77 | 72
Total assets | 3,982 |  |  |  |  | 2,733 |  |  |  | 3,982 |  | 2,733 |
Corporate [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Segment information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 0 |  | 0 | 0
Operating Profit |  |  |  |  |  |  |  |  |  | (306) |  | (226) | (204)
Depreciation & Amortization |  |  |  |  |  |  |  |  |  | 17 |  | 17 | 18
Capital Expenditures |  |  |  |  |  |  |  |  |  | 13 |  | 15 | 14
Total assets | $ 1,130 | [1] |  |  |  | $ 1,379 |  |  |  | $ 1,130 | [1] | $ 1,379 |
[1] | 1 Corporate assets consist principally of cash and equivalents, assets for pension benefits, deferred income taxes and leasehold improvements related to subleased areas.

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