Segment Reporting - Reconciliation of Consolidated Operating Income to Adjusted Operating Income (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Segment Reporting [Abstract]
Operating income (GAAP measure)	$ 3,446	$ 3,545
Amortization of intangible assets	402	462
Net realized capital losses	105	75
Loss on assets held for sale	349	41
Acquisition-related integration costs	43	0
Office real estate optimization charges	25	0
Opioid litigation charge	0	484
Adjusted operating income	$ 4,370	$ 4,607

Adjusted Operating Income (Loss)

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- Definition

Office Real Estate Optimization Charges - Related to the abandonment of leased real estate and the related right-of-use assets and property and equipment

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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- Definition

Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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The net result for the period of deducting operating expenses from operating revenues.

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Amount of realized gain (loss) on investment.

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