Commitments and Contingencies	12 Months Ended
Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 15 — Commitments and Contingencies Guarantees Guarantees issued by certain of WTW’s subsidiaries with respect to the senior notes and credit facilities are discussed in Note 11 — Debt. Certain of WTW’s subsidiaries in the U.S. and the U.K. have given the landlords of some leased properties occupied by the Company guarantees with respect to the repayment of the lease obligations. The operating lease obligations subject to such guarantees amounted to $350 million and $399 million at December 31, 2023 and 2022, respectively. There were no finance lease obligations subject to such guarantees at December 31, 2023. The finance lease obligations subject to such guarantees amounted to $3 million at December 31, 2022. Acquisition liabilities In addition to the contingent consideration that may be payable related to our acquisitions (see Note 12 — Fair Value Measurements), we have deferred consideration of $3 million at December 31, 2023, which is payable until 2026. The Company had deferred consideration of $6 million at December 31, 2022. Other contractual obligations For certain subsidiaries and associates, the Company has the right to purchase shares (a call option) from co-shareholders at various dates in the future. In addition, the co-shareholders of certain subsidiaries and associates have the right to sell their shares (a put option) to the Company at various dates in the future. Generally, the exercise prices of such put options and call options are formula-based (using revenue and earnings) and are designed to reflect fair value. Based on current projections of profitability and exchange rates, and assuming the put options are exercised, the potential amount payable from these put options is not expected to exceed $3 million. Additionally, the Company has capital commitments with Trident V Parallel Fund, LP, an investment fund managed by Stone Point Capital, Dowling Capital Partners I, LP., and PruVen Capital Partners Fund II, LP. At December 31, 2023, the Company is obligated to make capital contributions of approximately $27 million, collectively, to these funds. Indemnification Agreements WTW has various agreements which provide that it may be obligated to indemnify the other party to the agreement with respect to certain matters. Generally, these indemnification provisions are included in contracts arising in the normal course of business and in connection with the purchase and sale of certain businesses, including the disposal of Willis Re. It is not possible to predict the maximum potential amount of future payments that may become due under these indemnification agreements because of the conditional nature of the Company’s obligations and the unique facts of each particular agreement. However, we do not believe that any potential liability that may arise from such indemnity provisions is probable or material. Legal Proceedings In the ordinary course of business, the Company is subject to various actual and potential claims, lawsuits and other proceedings. Some of the claims, lawsuits and other proceedings seek damages in amounts which could, if assessed, be significant. The Company also receives subpoenas in the ordinary course of business and, from time to time, receives requests for information in connection with governmental investigations. Errors and omissions claims, lawsuits, and other proceedings arising in the ordinary course of business are covered in part by professional indemnity or other appropriate insurance. The terms of this insurance vary by policy year. Regarding self-insured risks, the Company has established provisions which are believed to be adequate in light of current information and legal advice, or, in certain cases, where a range of loss exists, the Company accrues the minimum amount in the range if no amount within the range is a better estimate than any other amount. The Company adjusts such provisions from time to time according to developments. See Note 16 — Supplementary Information for Certain Balance Sheet Accounts for the amounts accrued at December 31, 2023 and 2022 in the consolidated balance sheets. On the basis of current information, the Company does not expect that the actual claims, lawsuits and other proceedings to which it is subject, or potential claims, lawsuits, and other proceedings relating to matters of which it is aware, will ultimately have a material adverse effect on its financial condition, results of operations or liquidity. Nonetheless, given the large or indeterminate amounts sought in certain of these actions, and the inherent unpredictability of litigation and disputes with insurance companies, it is possible that an adverse outcome or settlement in certain matters could, from time to time, have a material adverse effect on the Company’s results of operations or cash flows in a particular quarterly or annual period. The Company provides for contingent liabilities based on ASC 450, Contingencies, when it is determined that a liability, inclusive of defense costs, is probable and reasonably estimable. The contingent liabilities recorded are primarily developed actuarially. Litigation is subject to many factors which are difficult to predict so there can be no assurance that in the event of a material unfavorable result in one or more claims, we will not incur material costs.

Commitments and Contingencies

12 Months Ended

Dec. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

Note 15 — Commitments and Contingencies

Guarantees

Guarantees issued by certain of WTW’s subsidiaries with respect to the senior notes and credit facilities are discussed in Note 11 — Debt.

Certain of WTW’s subsidiaries in the U.S. and the U.K. have given the landlords of some leased properties occupied by the Company guarantees with respect to the repayment of the lease obligations. The operating lease obligations subject to such guarantees amounted to $350 million and $399 million at December 31, 2023 and 2022, respectively. There were no finance lease obligations subject to such guarantees at December 31, 2023. The finance lease obligations subject to such guarantees amounted to $3 million at December 31, 2022.

Acquisition liabilities

In addition to the contingent consideration that may be payable related to our acquisitions (see Note 12 — Fair Value Measurements), we have deferred consideration of $3 million at December 31, 2023, which is payable until 2026. The Company had deferred consideration of $6 million at December 31, 2022.

Other contractual obligations

For certain subsidiaries and associates, the Company has the right to purchase shares (a call option) from co-shareholders at various dates in the future. In addition, the co-shareholders of certain subsidiaries and associates have the right to sell their shares (a put option) to the Company at various dates in the future. Generally, the exercise prices of such put options and call options are formula-based (using revenue and earnings) and are designed to reflect fair value. Based on current projections of profitability and exchange rates, and assuming the put options are exercised, the potential amount payable from these put options is not expected to exceed $3 million.

Additionally, the Company has capital commitments with Trident V Parallel Fund, LP, an investment fund managed by Stone Point Capital, Dowling Capital Partners I, LP., and PruVen Capital Partners Fund II, LP. At December 31, 2023, the Company is obligated to make capital contributions of approximately $27 million, collectively, to these funds.

Indemnification Agreements

WTW has various agreements which provide that it may be obligated to indemnify the other party to the agreement with respect to certain matters. Generally, these indemnification provisions are included in contracts arising in the normal course of business and in connection with the purchase and sale of certain businesses, including the disposal of Willis Re. It is not possible to predict the maximum potential amount of future payments that may become due under these indemnification agreements because of the conditional nature of the Company’s obligations and the unique facts of each particular agreement. However, we do not believe that any potential liability that may arise from such indemnity provisions is probable or material.

Legal Proceedings

In the ordinary course of business, the Company is subject to various actual and potential claims, lawsuits and other proceedings. Some of the claims, lawsuits and other proceedings seek damages in amounts which could, if assessed, be significant. The Company also receives subpoenas in the ordinary course of business and, from time to time, receives requests for information in connection with governmental investigations.

Errors and omissions claims, lawsuits, and other proceedings arising in the ordinary course of business are covered in part by professional indemnity or other appropriate insurance. The terms of this insurance vary by policy year. Regarding self-insured risks, the Company has established provisions which are believed to be adequate in light of current information and legal advice, or, in certain cases, where a range of loss exists, the Company accrues the minimum amount in the range if no amount within the range is a better estimate than any other amount. The Company adjusts such provisions from time to time according to developments. See Note 16 — Supplementary Information for Certain Balance Sheet Accounts for the amounts accrued at December 31, 2023 and 2022 in the consolidated balance sheets.

On the basis of current information, the Company does not expect that the actual claims, lawsuits and other proceedings to which it is subject, or potential claims, lawsuits, and other proceedings relating to matters of which it is aware, will ultimately have a material adverse effect on its financial condition, results of operations or liquidity. Nonetheless, given the large or indeterminate amounts sought in certain of these actions, and the inherent unpredictability of litigation and disputes with insurance companies, it is possible that an adverse outcome or settlement in certain matters could, from time to time, have a material adverse effect on the Company’s results of operations or cash flows in a particular quarterly or annual period.

The Company provides for contingent liabilities based on ASC 450, Contingencies, when it is determined that a liability, inclusive of defense costs, is probable and reasonably estimable. The contingent liabilities recorded are primarily developed actuarially. Litigation is subject to many factors which are difficult to predict so there can be no assurance that in the event of a material unfavorable result in one or more claims, we will not incur material costs.