Income Taxes (Unaudited) Effective Income Tax Rate Reconciliation (Details 1) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Federal and foreign income tax expense	$ 204	$ 265	$ 393	$ 1,086
Effective income tax rate	17.70%	20.40%	17.10%	25.20%
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	$ 41	$ 48	$ 82	$ 99
Income Tax Reconciliation Deductions FDII	$ 15	$ 10	$ 29	$ 20

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of reported income tax benefit from difference to expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to foreign-derived intangible income (FDII).

+ References

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit.

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