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Condensed Financial Information (Parent Company Only) - Schedule of Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jan. 18, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Cash flows from operating activities |  |  |  |
Net income |  | $ 402,241 | $ 392,929 | $ 305,262
Items not requiring (providing) cash |  |  |  |
(Accretion)/ amortization |  | 14,446 | 16,491 | 20,335
Share-based compensation |  | 9,222 | 9,274 | 9,133
(Increase) decrease in value of equity securities |  | (2,971) | 1,094 | 1,272
Changes in other assets |  | (22,806) | (1,654) | 9,342
Changes in other liabilities |  | (13,573) | (724) | 22,602
Net cash provided by operating activities |  | 460,646 | 379,670 | 413,172
Cash flows from investing activities |  |  |  |
Purchases of premises and equipment, net |  | (38,531) | (22,465) | (19,579)
Purchases of equity securities |  | 0 | 0 | (49,975)
Redemptions of other investments |  | 643 | 0 | 0
Net cash provided by (used in) investing activities |  | 5,667 | 578,459 | (1,024,270)
Cash flows from financing activities |  |  |  |
Retirement of subordinated debentures |  | 0 | 0 | (300,000)
Proceeds from issuance of subordinated debentures | $ 296,400 | 0 | 0 | 296,324
Redemption of trust preferred securities |  | 0 | 0 | (96,499)
Proceeds from exercise of stock options |  | 2,016 | 802 | 156
Repurchase of common stock |  | (86,493) | (48,771) | (70,856)
Dividends paid |  | (150,003) | (145,904) | (128,424)
Net cash (used in) provided by financing activities |  | (556,179) | (682,706) | (2,314,427)
Net change in cash and cash equivalents |  | (89,866) | 275,423 | (2,925,525)
Cash and cash equivalents – beginning of year |  | 1,000,213 | 724,790 | 3,650,315
Cash and cash equivalents – end of year |  | 910,347 | 1,000,213 | 724,790
Home BancShares |  |  |  |
Cash flows from operating activities |  |  |  |
Net income |  | 402,241 | 392,929 | 305,262
Items not requiring (providing) cash |  |  |  |
(Accretion)/ amortization |  | (588) | (586) | 1,912
Share-based compensation |  | 9,222 | 9,274 | 9,133
(Increase) decrease in value of equity securities |  | (2,971) | 1,094 | 1,272
Equity in undistributed income of subsidiaries |  | (110,217) | (84,869) | (116,566)
Changes in other assets |  | (542) | (364) | (4,149)
Changes in other liabilities |  | (82) | (155) | 2,290
Net cash provided by operating activities |  | 297,063 | 317,323 | 199,154
Cash flows from investing activities |  |  |  |
Purchases of premises and equipment, net |  | (221) | 0 | 0
Net cash proceeds received – market acquisitions |  | 0 | 0 | 201,428
Purchases of equity securities |  | 0 | 0 | (49,975)
Proceeds from sale of equity securities |  | 3,436 | 1,522 | 13,778
Redemptions of other investments |  | 0 | 0 | 2,899
Net cash provided by (used in) investing activities |  | 3,215 | 1,522 | 168,130
Cash flows from financing activities |  |  |  |
Retirement of subordinated debentures |  | 0 | 0 | (300,000)
Proceeds from issuance of subordinated debentures |  | 0 | 0 | 296,324
Redemption of trust preferred securities |  | 0 | 0 | (96,499)
Proceeds from exercise of stock options |  | 2,016 | 802 | 156
Repurchase of common stock |  | (86,493) | (48,771) | (70,856)
Dividends paid |  | (150,003) | (145,904) | (128,424)
Net cash (used in) provided by financing activities |  | (234,480) | (193,873) | (299,299)
Net change in cash and cash equivalents |  | 65,798 | 124,972 | 67,985
Cash and cash equivalents – beginning of year |  | 484,542 | 359,570 | 291,585
Cash and cash equivalents – end of year |  | $ 550,340 | $ 484,542 | $ 359,570

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