Goodwill and Acquired Intangible Assets (Schedule of Changes in Goodwill) (Details) $ in Millions |
12 Months Ended |
|---|---|
|
Dec. 31, 2021
USD ($)
| |
| Goodwill [Roll Forward] | |
| Balance at beginning of period | $ 6,850 |
| Goodwill acquired | 1,888 |
| Divestiture of business | (60) |
| Other adjustments | (245) |
| Balance at end of period | 8,433 |
| Market Technology | |
| Goodwill [Roll Forward] | |
| Balance at beginning of period | 309 |
| Goodwill acquired | 1,873 |
| Other adjustments | (11) |
| Balance at end of period | 2,171 |
| Investment Intelligence | |
| Goodwill [Roll Forward] | |
| Balance at beginning of period | 2,541 |
| Divestiture of business | (23) |
| Other adjustments | (90) |
| Balance at end of period | 2,428 |
| Corporate Platforms | |
| Goodwill [Roll Forward] | |
| Balance at beginning of period | 481 |
| Other adjustments | (12) |
| Balance at end of period | 469 |
| Market Services | |
| Goodwill [Roll Forward] | |
| Balance at beginning of period | 3,519 |
| Goodwill acquired | 15 |
| Divestiture of business | (37) |
| Other adjustments | (132) |
| Balance at end of period | $ 3,365 |