Goodwill and Other Intangibles (Goodwill Narrative) (Details) $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($)
Goodwill [Line Items]
Goodwill impairment pre-tax	$ 1,060
Assurance IQ
Goodwill [Line Items]
Goodwill impairment pre-tax	1,060
Goodwill impairment after tax	$ (837)

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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