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Other Revenues and Other Expenses Other Revenues (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 525 | $ 514 | $ 1,075 | $ 1,029
Other revenues | 616 | 664 | 1,276 | 1,295
Vision fee for service arrangements |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 138 | 135 | 292 | 275
Prepaid legal plans |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 118 | 108 | 238 | 217
Fee-based investment management |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 100 | 86 | 202 | 171
Recordkeeping and administrative services (1) |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 43 | 53 | 90 | 106
Administrative services-only contracts |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 59 | 58 | 118 | 119
Other revenue from service contracts from customers |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 67 | 74 | 135 | 141
Other Income |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Other revenues | $ 91 | $ 150 | $ 201 | $ 266

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