v2.4.0.6
Condensed Consolidated Statements of Cash Flows (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Cash flows from operating activities:    
Net income $ 42 $ 84
Adjustments to reconcile net income to cash provided by operating activities:    
Depreciation and amortization 27 26
Share-based compensation 9 10
Excess tax benefits related to share-based compensation (2) (1)
Provision for bad debts 1 2
Deferred income taxes (23) (8)
Non-cash restructuring charges 1 4
Asset retirements and impairment charges 10 12
Amortization of debt issuance costs 1 1
Accretion of debt discounts 1 1
Other non-cash items included in net income (1) 1
Net change in operating assets and liabilities, net of effects of acquisitions:    
Receivables, net 14 (20)
Other assets (7) (23)
Accounts payable and accrued expenses 44 (19)
Section 31 fees payable to SEC (26) (37)
Accrued personnel costs (52) (80)
Deferred revenue 105 127
Other liabilities 5 28
Net cash provided by operating activities 149 108
Cash flows from investing activities:    
Purchases of trading securities (112) (18)
Proceeds from sales and redemptions of trading securities 118 97
Purchases of property and equipment (20) (16)
Net cash provided by (used in) investing activities (14) 63
Cash flows from financing activities:    
Payments of debt obligations (11) (111)
Cash paid for repurchase of common stock (10) (50)
Cash dividends (21)  
Issuances of common stock, net of treasury stock purchases 5 1
Excess tax benefits related to share-based compensation 2 1
Net cash used in financing activities (35) (159)
Effect of exchange rate changes on cash and cash equivalents (6) 7
Net increase (decrease) in cash and cash equivalents 94 19
Cash and cash equivalents at beginning of period 497 506
Cash and cash equivalents at end of period 591 525
Cash paid for:    
Interest 37 38
Income taxes, net of refund $ 11 $ 22