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v3.10.0.1

Description of Business and Significant Accounting Policies - Impact of the Adoption of Topic 606 on the Condensed Consolidated Income Statements and Balance Sheets (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jan. 01, 2018 | Dec. 31, 2017
Revenue |  |  |  |  |  |
Revenues | $ 850 | $ 801 | $ 1,711 | $ 1,608 |  |
Expense |  |  |  |  |  |
Commissions expense | 8 |  | 12 |  |  |
Total expense | 774 | 744 | 1,564 | 1,502 |  |
Income before provision for income taxes | 72 | 52 | 139 | 97 |  |
Income tax expense | 14 | 12 | 27 | 28 |  |
Net income | $ 58 | $ 40 | $ 112 | $ 69 |  |
Basic earnings per share (in dollars per share) | $ 0.82 | $ 0.58 | $ 1.59 | $ 1.00 |  |
Diluted earnings per share (in dollars per share) | $ 0.80 | $ 0.56 | $ 1.55 | $ 0.97 |  |
Assets |  |  |  |  |  |
Cash and cash equivalents | $ 202 |  | $ 202 |  |  | $ 336
Restricted cash, cash equivalents and investments | 629 |  | 629 |  |  | 1,280
Unbilled revenue (net of advance collections) | 268 |  | 268 |  |  | 297
Prepaid expenses and other current assets | 37 |  | 37 |  |  | 15
Other assets | 23 |  | 23 |  |  | 16
Liabilities |  |  |  |  |  |
Accounts payable and other current liabilities | 39 |  | 39 |  |  | 59
Deferred income taxes | 70 |  | 70 |  |  | 68
Other liabilities | 16 |  | 16 |  |  | 14
Equity |  |  |  |  |  |
Retained earnings | (302) |  | (302) |  |  | $ (377)
Professional service revenues |  |  |  |  |  |
Revenue |  |  |  |  |  |
Revenues | 115 | $ 109 | 244 | $ 229 |  |
Balance Using Previous Standard |  |  |  |  |  |
Revenue |  |  |  |  |  |
Revenues | 850 |  | 1,709 |  |  |
Expense |  |  |  |  |  |
Commissions expense | 14 |  | 27 |  |  |
Total expense | 780 |  | 1,579 |  |  |
Income before provision for income taxes | 66 |  | 122 |  |  |
Income tax expense | 12 |  | 23 |  |  |
Net income | $ 54 |  | $ 99 |  |  |
Basic earnings per share (in dollars per share) | $ 0.77 |  | $ 1.41 |  |  |
Diluted earnings per share (in dollars per share) | $ 0.75 |  | $ 1.37 |  |  |
Assets |  |  |  |  |  |
Cash and cash equivalents | $ 208 |  | $ 208 |  |  |
Restricted cash, cash equivalents and investments | 623 |  | 623 |  |  |
Unbilled revenue (net of advance collections) | 274 |  | 274 |  |  |
Prepaid expenses and other current assets | 29 |  | 29 |  |  |
Other assets | 17 |  | 17 |  |  |
Liabilities |  |  |  |  |  |
Accounts payable and other current liabilities | 43 |  | 43 |  |  |
Deferred income taxes | 68 |  | 68 |  |  |
Other liabilities | 20 |  | 20 |  |  |
Equity |  |  |  |  |  |
Retained earnings | (316) |  | (316) |  |  |
Balance Using Previous Standard | Professional service revenues |  |  |  |  |  |
Revenue |  |  |  |  |  |
Revenues | 115 |  | 242 |  |  |
ASU 2014-09 | Increase (Decrease) |  |  |  |  |  |
Revenue |  |  |  |  |  |
Revenues | 0 |  | 2 |  |  |
Expense |  |  |  |  |  |
Commissions expense | (6) |  | (15) |  |  |
Total expense | (6) |  | (15) |  |  |
Income before provision for income taxes | 6 |  | 17 |  |  |
Income tax expense | 2 |  | 4 |  |  |
Net income | $ 4 |  | $ 13 |  |  |
Basic earnings per share (in dollars per share) | $ 0.05 |  | $ 0.18 |  |  |
Diluted earnings per share (in dollars per share) | $ 0.05 |  | $ 0.18 |  |  |
Assets |  |  |  |  |  |
Cash and cash equivalents | $ (6) |  | $ (6) |  |  |
Restricted cash, cash equivalents and investments | 6 |  | 6 |  |  |
Unbilled revenue (net of advance collections) | (6) |  | (6) |  |  |
Prepaid expenses and other current assets | 8 |  | 8 |  |  |
Other assets | 6 |  | 6 |  |  |
Liabilities |  |  |  |  |  |
Accounts payable and other current liabilities | (4) |  | (4) |  |  |
Deferred income taxes | 2 |  | 2 |  |  |
Other liabilities | (4) |  | (4) |  |  |
Equity |  |  |  |  |  |
Retained earnings | 14 |  | 14 |  | $ 1 |
ASU 2014-09 | Increase (Decrease) | Professional service revenues |  |  |  |  |  |
Revenue |  |  |  |  |  |
Revenues | $ 0 |  | $ 2 |  |  |

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