XML 62 R50.htm IDEA: XBRL DOCUMENT
v3.20.1

Loans and Allowance for Credit Losses (Allowance for Credit Losses by Portfolio Class) (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Jan. 01, 2020 | Dec. 31, 2019
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Beginning balance | $ 191,251 | $ 194,514 |  |
Allowance for loan losses: Net provision for loan losses | 246,793 | 18,043 |  |
Allowance for loan losses: Ending balance | 426,003 | 194,688 |  |
Reserve for unfunded lending commitments: Beginning balance | 3,974 |  |  |
Reserve for unfunded lending commitments: Cumulative effect of change in accounting principle | 27,330 |  |  |
Reserve for unfunded lending commitments: Provision for losses | 17,688 |  |  |
Reserve for unfunded lending commitments: Ending balance | 48,992 |  |  |
Total allowance for credit losses | 474,995 |  | $ 271,966 | $ 195,225
Allowance for loan losses: Individually evaluated | 68,494 | 2,690 |  |
Allowance for loan losses: Amounts related to purchased credit impaired loans |  | 10,089 |  |
Allowance for loan losses: Collectively evaluated | 357,509 | 181,909 |  |
Reserve for unfunded lending commitments: Individually evaluated | 7,215 |  |  |
Reserve for unfunded lending commitments: Collectively evaluated | 41,777 |  |  |
Loans: Individually evaluated | 274,529 | 258,072 |  |
Loans: Purchased credit impaired loans |  | 124,895 |  |
Purchased credit impaired loans | 21,241,152 | 19,729,871 |  |
Loans receivable | 21,515,681 | 20,112,838 |  | 21,212,755
Non-Purchased Credit Impaired Loans [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Cumulative effect of change in accounting principle | 49,411 |  |  |
Allowance for loan losses: Charge-offs | (47,738) | (20,991) |  |
Allowance for loan losses: Recoveries | 3,974 | 3,122 |  |
Allowance for loan losses: Net provision for loan losses | 229,105 | 18,043 |  |
Total Commercial [Member] | Commercial Real Estate - Income Producing [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Beginning balance | 20,869 | 17,638 |  |
Allowance for loan losses: Ending balance | 64,960 | 20,803 |  |
Reserve for unfunded lending commitments: Cumulative effect of change in accounting principle | 449 |  |  |
Reserve for unfunded lending commitments: Provision for losses | 280 |  |  |
Reserve for unfunded lending commitments: Ending balance | 729 |  |  |
Total allowance for credit losses | 65,689 |  |  |
Allowance for loan losses: Individually evaluated | 458 | 143 |  |
Allowance for loan losses: Amounts related to purchased credit impaired loans |  | 35 |  |
Allowance for loan losses: Collectively evaluated | 64,502 | 20,625 |  |
Reserve for unfunded lending commitments: Collectively evaluated | 729 |  |  |
Loans: Individually evaluated | 7,300 | 2,668 |  |
Loans: Purchased credit impaired loans |  | 4,267 |  |
Purchased credit impaired loans | 3,225,483 | 2,556,459 |  |
Loans receivable | 3,232,783 | 2,563,394 |  | 2,994,448
Total Commercial [Member] | Construction and Land Development [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Beginning balance | 9,350 | 15,647 |  |
Allowance for loan losses: Ending balance | 33,823 | 14,027 |  |
Reserve for unfunded lending commitments: Cumulative effect of change in accounting principle | 15,658 |  |  |
Reserve for unfunded lending commitments: Provision for losses | 13,205 |  |  |
Reserve for unfunded lending commitments: Ending balance | 28,863 |  |  |
Total allowance for credit losses | 62,686 |  |  |
Allowance for loan losses: Individually evaluated | 23 | 1 |  |
Allowance for loan losses: Amounts related to purchased credit impaired loans |  | 78 |  |
Allowance for loan losses: Collectively evaluated | 33,800 | 13,948 |  |
Reserve for unfunded lending commitments: Collectively evaluated | 28,863 |  |  |
Loans: Individually evaluated | 3,350 | 19 |  |
Loans: Purchased credit impaired loans |  | 2,897 |  |
Purchased credit impaired loans | 1,095,376 | 1,337,151 |  |
Loans receivable | 1,098,726 | 1,340,067 |  | 1,157,451
Total Commercial [Member] | Non-Purchased Credit Impaired Loans [Member] | Commercial Real Estate - Income Producing [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Cumulative effect of change in accounting principle | 7,287 |  |  |
Allowance for loan losses: Charge-offs | (830) | (10) |  |
Allowance for loan losses: Recoveries | 7 | 2 |  |
Allowance for loan losses: Net provision for loan losses | 37,627 | 3,173 |  |
Total Commercial [Member] | Non-Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Cumulative effect of change in accounting principle | 7,478 |  |  |
Allowance for loan losses: Recoveries | 234 | 11 |  |
Allowance for loan losses: Net provision for loan losses | 16,761 | (1,631) |  |
Total Commercial [Member] | Total Commercial And Industrial [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Beginning balance | 117,409 | 111,509 |  |
Allowance for loan losses: Ending balance | 235,833 | 111,327 |  |
Reserve for unfunded lending commitments: Beginning balance | 3,974 |  |  |
Reserve for unfunded lending commitments: Cumulative effect of change in accounting principle | 6,060 |  |  |
Reserve for unfunded lending commitments: Provision for losses | 5,471 |  |  |
Reserve for unfunded lending commitments: Ending balance | 15,505 |  |  |
Total allowance for credit losses | 251,338 |  |  |
Allowance for loan losses: Individually evaluated | 67,506 | 1,980 |  |
Allowance for loan losses: Amounts related to purchased credit impaired loans |  | 473 |  |
Allowance for loan losses: Collectively evaluated | 168,327 | 108,874 |  |
Reserve for unfunded lending commitments: Individually evaluated | 7,215 |  |  |
Reserve for unfunded lending commitments: Collectively evaluated | 8,290 |  |  |
Loans: Individually evaluated | 257,974 | 248,480 |  |
Loans: Purchased credit impaired loans |  | 11,917 |  |
Purchased credit impaired loans | 11,794,686 | 10,911,357 |  |
Loans receivable | 12,052,660 | 11,171,754 |  | 11,905,407
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Non-Real Estate [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Beginning balance | 106,432 | 97,752 |  |
Allowance for loan losses: Ending balance | 186,998 | 97,520 |  |
Reserve for unfunded lending commitments: Beginning balance | 3,974 |  |  |
Reserve for unfunded lending commitments: Cumulative effect of change in accounting principle | 5,772 |  |  |
Reserve for unfunded lending commitments: Provision for losses | 5,182 |  |  |
Reserve for unfunded lending commitments: Ending balance | 14,928 |  |  |
Total allowance for credit losses | 201,926 |  |  |
Allowance for loan losses: Individually evaluated | 67,404 | 1,775 |  |
Allowance for loan losses: Amounts related to purchased credit impaired loans |  | 288 |  |
Allowance for loan losses: Collectively evaluated | 119,594 | 95,457 |  |
Reserve for unfunded lending commitments: Individually evaluated | 7,215 |  |  |
Reserve for unfunded lending commitments: Collectively evaluated | 7,713 |  |  |
Loans: Individually evaluated | 253,790 | 231,506 |  |
Loans: Purchased credit impaired loans |  | 6,445 |  |
Purchased credit impaired loans | 9,067,550 | 8,418,375 |  |
Loans receivable | 9,321,340 | 8,656,326 |  | 9,166,947
Total Commercial [Member] | Total Commercial And Industrial [Member] | Commercial Real Estate - Owner Occupied [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Beginning balance | 10,977 | 13,757 |  |
Allowance for loan losses: Ending balance | 48,835 | 13,807 |  |
Reserve for unfunded lending commitments: Cumulative effect of change in accounting principle | 288 |  |  |
Reserve for unfunded lending commitments: Provision for losses | 289 |  |  |
Reserve for unfunded lending commitments: Ending balance | 577 |  |  |
Total allowance for credit losses | 49,412 |  |  |
Allowance for loan losses: Individually evaluated | 102 | 205 |  |
Allowance for loan losses: Amounts related to purchased credit impaired loans |  | 185 |  |
Allowance for loan losses: Collectively evaluated | 48,733 | 13,417 |  |
Reserve for unfunded lending commitments: Collectively evaluated | 577 |  |  |
Loans: Individually evaluated | 4,184 | 16,974 |  |
Loans: Purchased credit impaired loans |  | 5,472 |  |
Purchased credit impaired loans | 2,727,136 | 2,492,982 |  |
Loans receivable | 2,731,320 | 2,515,428 |  | 2,738,460
Total Commercial [Member] | Total Commercial And Industrial [Member] | Non-Purchased Credit Impaired Loans [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Cumulative effect of change in accounting principle | 14,633 |  |  |
Allowance for loan losses: Charge-offs | (41,227) | (16,344) |  |
Allowance for loan losses: Recoveries | 2,307 | 1,943 |  |
Allowance for loan losses: Net provision for loan losses | 142,711 | 14,219 |  |
Total Commercial [Member] | Total Commercial And Industrial [Member] | Non-Purchased Credit Impaired Loans [Member] | Commercial Non-Real Estate [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Cumulative effect of change in accounting principle | (244) |  |  |
Allowance for loan losses: Charge-offs | (40,713) | (16,344) |  |
Allowance for loan losses: Recoveries | 2,226 | 1,926 |  |
Allowance for loan losses: Net provision for loan losses | 119,297 | 14,186 |  |
Total Commercial [Member] | Total Commercial And Industrial [Member] | Non-Purchased Credit Impaired Loans [Member] | Commercial Real Estate - Owner Occupied [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Cumulative effect of change in accounting principle | 14,877 |  |  |
Allowance for loan losses: Charge-offs | (514) |  |  |
Allowance for loan losses: Recoveries | 81 | 17 |  |
Allowance for loan losses: Net provision for loan losses | 23,414 | 33 |  |
Residential Mortgages [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Beginning balance | 20,331 | 23,782 |  |
Allowance for loan losses: Ending balance | 48,200 | 23,535 |  |
Reserve for unfunded lending commitments: Cumulative effect of change in accounting principle | 17 |  |  |
Reserve for unfunded lending commitments: Ending balance | 17 |  |  |
Total allowance for credit losses | 48,217 |  |  |
Allowance for loan losses: Individually evaluated | 312 | 219 |  |
Allowance for loan losses: Amounts related to purchased credit impaired loans |  | 9,162 |  |
Allowance for loan losses: Collectively evaluated | 47,888 | 14,154 |  |
Reserve for unfunded lending commitments: Collectively evaluated | 17 |  |  |
Loans: Individually evaluated | 4,625 | 5,397 |  |
Loans: Purchased credit impaired loans |  | 102,199 |  |
Purchased credit impaired loans | 2,975,360 | 2,825,655 |  |
Loans receivable | 2,979,985 | 2,933,251 |  | 2,990,631
Residential Mortgages [Member] | Non-Purchased Credit Impaired Loans [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Cumulative effect of change in accounting principle | 12,921 |  |  |
Allowance for loan losses: Charge-offs | (141) | (406) |  |
Allowance for loan losses: Recoveries | 212 | 162 |  |
Allowance for loan losses: Net provision for loan losses | 14,877 | (3) |  |
Consumer [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Beginning balance | 23,292 | 25,938 |  |
Allowance for loan losses: Ending balance | 43,187 | 24,996 |  |
Reserve for unfunded lending commitments: Cumulative effect of change in accounting principle | 5,146 |  |  |
Reserve for unfunded lending commitments: Provision for losses | (1,268) |  |  |
Reserve for unfunded lending commitments: Ending balance | 3,878 |  |  |
Total allowance for credit losses | 47,065 |  |  |
Allowance for loan losses: Individually evaluated | 195 | 347 |  |
Allowance for loan losses: Amounts related to purchased credit impaired loans |  | 341 |  |
Allowance for loan losses: Collectively evaluated | 42,992 | 24,308 |  |
Reserve for unfunded lending commitments: Collectively evaluated | 3,878 |  |  |
Loans: Individually evaluated | 1,280 | 1,508 |  |
Loans: Purchased credit impaired loans |  | 3,615 |  |
Purchased credit impaired loans | 2,150,247 | 2,099,249 |  |
Loans receivable | 2,151,527 | 2,104,372 |  | $ 2,164,818
Consumer [Member] | Non-Purchased Credit Impaired Loans [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses: Cumulative effect of change in accounting principle | 7,092 |  |  |
Allowance for loan losses: Charge-offs | (5,540) | (4,231) |  |
Allowance for loan losses: Recoveries | 1,214 | 1,004 |  |
Allowance for loan losses: Net provision for loan losses | $ 17,129 | $ 2,285 |  |

X
- Definition Financing receivable cumulative effect of change in accounting principle. + References No definition available. + Details
Name: | hwc_FinancingReceivableCumulativeEffectOfChangeInAccountingPrinciple
Namespace Prefix: | hwc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Provision for losses on unfunded commitments. + References No definition available. + Details
Name: | hwc_ProvisionForLossesOnUnfundedCreditCommitments
Namespace Prefix: | hwc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reserve for unfunded lending commitments. + References No definition available. + Details
Name: | hwc_ReserveForUnfundedLendingCommitments
Namespace Prefix: | hwc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Reserve for unfunded lending commitments collectively evaluated for impairment. + References No definition available. + Details
Name: | hwc_ReserveForUnfundedLendingCommitmentsCollectivelyEvaluatedForImpairment
Namespace Prefix: | hwc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Reserve for unfunded lending commitments cumulative effect of change in accounting principle. + References No definition available. + Details
Name: | hwc_ReserveForUnfundedLendingCommitmentsCumulativeEffectOfChangeInAccountingPrinciple
Namespace Prefix: | hwc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reserve for unfunded lending commitments individually evaluated for Impairment. + References No definition available. + Details
Name: | hwc_ReserveForUnfundedLendingCommitmentsIndividuallyEvaluatedForImpairment
Namespace Prefix: | hwc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Reserve for loans impairments recorded after acquisition as a result of current information and events which result in it being probable that estimated cash flows will be less than previously expected or because actual cash flows are less than cash flows previously expected. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118938799&loc=d3e13503-111538 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=118939070&loc=d3e15032-111544 + Details
Name: | us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAllowanceForLoanLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=118939070&loc=d3e15032-111544 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118938799&loc=d3e13503-111538 + Details
Name: | us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118955202&loc=SL82895884-210446 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=118955255&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=118955255&loc=SL82922352-210448 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5074-111524 + Details
Name: | us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, before allowance for credit loss, of financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919230-210447 + Details
Name: | us-gaap_NotesReceivableGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of expense related to estimated loss from loan and lease transactions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
Name: | us-gaap_ProvisionForLoanAndLeaseLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_CreditLossStatusAxis=hwc_NonPurchasedCreditImpairedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=hwc_CommercialRealEstateIncomeProducingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=us-gaap_CommercialAndIndustrialSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=hwc_CommercialNonRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=hwc_CommercialRealEstateOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |