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Capital Structure - Common Stock, Share Repurchases and Retirement of Treasury Stock (Details) - USD ($) |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 30, 2024 | Jan. 19, 2024 | Dec. 27, 2023 | Nov. 08, 2023 | Apr. 27, 2023 | Apr. 01, 2023 | Jan. 31, 2024 | Jun. 30, 2023 | Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Nov. 06, 2023 | Jun. 22, 2023 | Dec. 06, 2021
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly dividends per share (usd per share) |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.3775 |  | $ 0.350 | $ 0.325 |  |  |
Dividends paid per share (in usd per share) |  |  |  |  |  |  |  |  |  |  |  |  | 1.51 |  | 1.40 | 1.30 |  |  |
Common stock, dividends, proposed annual amount, per share (usd per share) |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.30 |  | $ 1.40 | $ 1.51 |  |  |
Common stock, annual dividends increase, percentage |  |  |  |  |  |  |  |  |  |  |  |  | 8.00% |  | 8.00% | 8.00% |  |  |
Eligible compensation withholding, minimum, percentage |  |  |  |  |  |  |  |  |  |  |  |  | 1.00% |  |  |  |  |  |
Eligible compensation withholding, maximum, percentage |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |
Market value on offering date percentage |  |  |  |  |  |  |  |  |  |  |  |  | 90.00% |  |  |  |  |  |
Exercise price as a percentage of fair value (as a percent) |  |  |  |  |  |  | 90.00% |  |  |  |  | 95.00% | 90.00% |  |  |  |  |  |
Increase in shares available for issuance under the ESPP (in shares) |  |  |  |  |  | 4,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Treasury stock reserved for issuance under the ESPP (in shares) |  |  |  |  |  |  |  |  |  |  | 6,702,125 |  | 6,702,125 |  |  |  |  |  |
Shares repurchased recorded in treasury |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,160,000,000 | [1] | $ 595,000,000 | $ 44,000,000 |  |  |
Retirement of treasury stock (in shares) |  |  |  |  |  |  |  |  |  |  | 157,676,142 |  | 0 |  |  |  |  |  |
Retirement of treasury stock |  |  |  |  |  |  |  |  |  |  | $ 5,000,000,000 |  |  |  |  |  |  |  |
Treasury Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares repurchased recorded in treasury |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,043,000,000 | [1] | $ 595,000,000 | $ 44,000,000 |  |  |
Retirement of treasury stock (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 157,676,142 |  |  |  |  |  |
Retirement of treasury stock |  |  |  |  |  |  |  |  |  |  |  |  | $ (5,009,000,000) |  |  |  |  |  |
Additional Paid-In Capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares repurchased recorded in treasury | [1] |  |  |  |  |  |  |  |  |  |  |  | 117,000,000 |  |  |  |  |  |
Retirement of treasury stock |  |  |  |  |  |  |  |  |  |  |  |  | 5,008,000,000 |  |  |  |  |  |
November 2023 Accelerated Share Repurchase Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accelerated share repurchases, agreement amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 950,000,000 |  |
Accelerated share repurchases, paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (950,000,000) |  |
Shares, repurchased (in shares) |  |  |  | 13,181,918 | 4,494,224 |  |  |  |  |  |  |  |  |  |  |  |  |  |
November 2023 Accelerated Share Repurchase Agreements | Treasury Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares repurchased recorded in treasury |  |  |  | $ 833,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
November 2023 Accelerated Share Repurchase Agreements | Additional Paid-In Capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares repurchased recorded in treasury |  |  |  | $ 117,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 Capital Allocation Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000
2023 Capital Allocation Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  |  |  |  |  |  | $ 2,700,000,000 |  | $ 2,700,000,000 |  |  |  |  | $ 2,700,000,000 |
Target allocation, return to shareholders, percent of cash available |  |  |  |  |  |  |  |  | 80.00% |  |  |  |  |  |  |  |  |  |
Average price paid per share (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | $ 39.56 |  |  |  |  |  |
Shares repurchased |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,200,000,000 |  |  |  |  |  |
Open market repurchases |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average price paid per share (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 40.48 | $ 40.85 |  |  |
Shares repurchased |  |  |  |  |  |  |  |  |  |  |  |  | $ 200,000,000 |  | $ 595,000,000 | $ 44,000,000 |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, dividends, proposed annual amount, per share (usd per share) |  |  | $ 1.63 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends per common share (in usd per share) |  |  | $ 0.4075 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Treasury Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Retirement of treasury stock (in shares) |  |  |  |  |  |  |  | 770,205 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | November 2023 Accelerated Share Repurchase Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares, repurchased (in shares) |  | 770,205 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | 2023 Capital Allocation Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  |  |  | $ 2,700,000,000 |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, remaining amount |  |  |  |  |  |  |  | $ 1,500,000,000 |  |  |  |  |  |  |  |  |  |  |
Scenario, Plan | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, dividends, proposed annual amount, per share (usd per share) |  |  |  |  |  |  |  |  |  | $ 1.63 |  |  |  |  |  |  |  |  |
Common stock, annual dividends increase, percentage |  |  |  |  |  |  |  |  |  | 8.00% |  |  |  |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual dividend growth rate, percentage |  |  |  |  |  |  |  |  |  |  |  |  | 7.00% |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual dividend growth rate, percentage |  |  |  |  |  |  |  |  |  |  |  |  | 9.00% |  |  |  |  |  |
Long-term incentive plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term incentive plans (in shares) |  |  |  |  |  |  |  |  |  |  | 27,362,083 |  | 27,362,083 |  |  |  |  |  |
[1] | Includes excise tax accrued of $10 million as of December 31, 2023

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