Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Gross deferred tax assets
Net operating loss and tax credit carryforwards	$ 276	$ 330
Employee compensation and benefit plans	2,430	2,248
Allowance for credit losses and other reserves	599	669
Valuation of inventory, investments and receivables	474	19
Other	15	43
Total deferred tax assets	3,794	3,309
Deferred tax assets valuation allowance	208	236
Deferred tax assets after valuation allowance	3,586	3,073
Gross deferred tax liabilities
Fixed assets	1,287	1,130
Intangibles and goodwill	2,046	1,156
Total deferred tax liabilities	3,333	2,286
Net deferred tax assets	$ 253	$ 787