BASIS OF PRESENTATION (Policies)	6 Months Ended
Jun. 30, 2024
Accounting Policies [Abstract]
Basis of Accounting	The Unaudited Condensed Consolidated Financial Statements include all accounts of the Company and its wholly-owned and majority-owned subsidiaries in which it has control. Inter-company accounts and transactions have been eliminated. Related party transactions between the Company and its equity method investees have not been eliminated. Non-controlling interest represents a non-controlling investor's interests in the results of subsidiaries that the Company controls and consolidates.
Recently Issued and Adopted Accounting Pronouncements	The Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") is the sole source of authoritative U.S. GAAP other than SEC issued rules and regulations that apply only to SEC registrants. The FASB issues Accounting Standards Updates ("ASU") to communicate changes to the codification. The Company considers the applicability and impact of all ASUs. ASUs pending adoption were assessed and determined to be either not applicable or are not expected to have a material impact on the accompanying Unaudited Condensed Consolidated Financial Statements. Recently Issued Accounting Pronouncements In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (“ASU 2023-07”), which requires public entities to disclose information about their reportable segments’ significant expenses on an interim and annual basis. In addition, the amendments clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, provide new segment disclosure requirements for entities with a single reportable segment and contain other disclosure requirements. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023 and interim periods beginning after December 15, 2024, with early adoption permitted. The Company is currently assessing the impact of this ASU on its financial statements. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures ("ASU 2023-09"), which requires public entities to disclose disaggregated information about their effective tax rate reconciliation as well as information on income taxes paid. ASU 2023-09 is effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The Company is currently assessing the impact of this ASU on its financial statements. On March 6, 2024, the SEC adopted new rules designed to enhance public company disclosures related to the risks and impacts of climate-related matters. The rules amend the provisions of both Regulation S-K and Regulation S-X to require disclosure of climate-related risks, transition plans, targets and goals, risk management and governance as well as require disclosure of the financial effects of severe weather events and other natural conditions as well as the use of carbon offsets or renewable energy credits. Disclosure requirements will begin phasing in for fiscal years beginning on or after January 1, 2025, subject to legal challenges and the SEC's voluntary stay of the disclosure requirements. The Company will continue to assess the impact of these new rules on its financial statements while the stay is in place.
Fair Value Measurements	ASC 820, Fair Value Measurement ("ASC 820"), defines fair value as the price that would be received if an asset is sold or the price paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820 also establishes a three-level fair value hierarchy that prioritizes information used in developing assumptions when pricing an asset or liability as follows: •Level 1: Observable inputs such as quoted prices in active markets; •Level 2: Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and •Level 3: Unobservable inputs where there is little or no market data, which requires the reporting entity to develop its own assumptions. ASC 820 requires the use of observable market data, when available, in making fair value measurements. When inputs used to measure fair value fall within different levels of the hierarchy, the level within which the fair value measurement is categorized is based on the lowest level input that is significant to the fair value measurement. In the normal course of business, the Company is exposed to certain risks arising from business operations and economic factors, including foreign currency and commodity price risk. These exposures are managed through operational strategies and the use of undesignated hedging contracts. The Company's derivative assets and liabilities are measured at fair value on a recurring basis using internal models based on observable market inputs, such as forward, interest, contract and discount rates with changes in fair value reported in Other income (expense), net in the accompanying Unaudited Condensed Consolidated Statement of Operations. During 2022, the Company entered into cross currency swaps with various financial institutions to fund a portion of the Yen-denominated purchase price of TCC. The cross currency swaps are measured at fair value on a recurring basis using observable market inputs, such as forward, discount and interest rates as well as credit default swap spreads. The Company designated the cross currency swaps as a partial hedge of its investment in certain subsidiaries whose functional currency is the Japanese Yen in order to manage foreign currency translation risk. As a result, changes in the fair value of the swaps are recorded in Equity in the accompanying Unaudited Condensed Consolidated Balance Sheet. From time to time, the Company settles and enters into new cross currency swaps with the same purpose and characteristics as initially established. The remaining portion of the Yen-denominated purchase price was funded by the Japanese Term Loan Facility. The carrying value of the facility is translated on a recurring basis using the exchange rate at the end of the applicable period and approximates its fair value. The Company designated the Japanese Term Loan Facility as a partial hedge of its investment in certain subsidiaries whose functional currency is the Japanese Yen in order to manage foreign currency translation risk. As a result, changes in the carrying value of the Japanese Term Loan Facility associated with foreign exchange rate movements are recorded in Equity in the Unaudited Condensed Consolidated Balance Sheet. During 2023, the Company entered into window forward contracts with Bank of America N.A. and JPMorgan Chase Bank N.A. to mitigate the foreign currency risk of the expected cash outflows associated with the Euro-denominated purchase price of the VCS Business. The instruments had an aggregate notional amount of €7 billion and were measured at fair value on a recurring basis using observable market inputs, such as forward, discount and interest rates with changes in fair value reported in Other income (expense), net in the accompanying Unaudited Condensed Consolidated Statement of Operations. During 2023, the Company recognized a $96 million loss on the mark-to-market valuation of its window forward contracts. The Company settled the window forward contracts on January 2, 2024, upon the acquisition of the VCS Business and recognized an additional $86 million loss. During 2023, the Company entered into several interest rate swap contracts to mitigate interest rate exposure on the forecasted issuance of long-term debt. The contracts had an aggregate notional amount of $1.525 billion and were designated as cash flow hedges with changes in fair value reported in Equity in the accompanying Unaudited Condensed Consolidated Balance Sheet. Fair value was measured on a recurring basis using observable market inputs, such as forward, discount and interest rates. In November 2023, the contracts were settled upon the issuance of the underlying debt. As a result, the Company deferred a net unrecognized gain of $58 million in Equity which will be subsequently recognized in Interest expense over the term of the related notes which range from 2034 to 2044. The amount expected to be amortized during 2024 is a net gain of $5 million. The fair value of the Company's long-term debt is measured based on observable market inputs which are considered Level 1 within the fair value hierarchy. The carrying value of cash and cash equivalents, accounts receivable, accounts payable and short-term borrowings approximate fair value due to the short-term nature of these accounts and would be classified as Level 1 in the fair value hierarchy. The Company's financing leases and project financing obligations, included in Long-term debt and Current portion of long-term debt on the accompanying Unaudited Condensed Consolidated Balance Sheet, approximate fair value and are classified as Level 3 in the fair value hierarchy.
Product Warranties	In the ordinary course of business, the Company provides standard warranty coverage on its products. Provisions for these amounts are established at the time of sale and estimated primarily based on product warranty terms and historical claims experience. In addition, the Company incurs discretionary costs to service its products in connection with specific product performance issues. Provisions for these amounts are established when they are known and estimable. The Company assesses the adequacy of its initial provisions and will make adjustments as necessary based on known or anticipated claims or as new information becomes available that suggests it is probable that future costs will be different than estimated amounts. Amounts associated with these provisions are classified on the accompanying Unaudited Condensed Consolidated Balance Sheet as Accrued liabilities or Other long-term liabilities based on their anticipated settlement date.
Revenue Recognition	The Company accounts for revenue in accordance with ASC 606: Revenue from Contracts with Customers. Revenue is recognized when control of a good or service promised in a contract (i.e., performance obligation) is transferred to a customer. Control is obtained when a customer has the ability to direct the use of and obtain substantially all of the remaining benefits from that good or service. A significant portion of the Company's performance obligations are recognized at a point-in-time when control of the product transfers to the customer, which is generally at the time of shipment. The remaining portion of the Company’s performance obligations are recognized over time as the customer simultaneously obtains control as the Company performs work under a contract, or if the product being produced for the customer has no alternative use and the Company has a contractual right to payment. The timing of revenue recognition, billings and cash collections results in contract assets and contract liabilities. Contract assets relate to the conditional right to consideration for any completed performance under a contract when costs are incurred in excess of billings under the percentage-of-completion methodology. Contract liabilities relate to payments received in advance of performance under a contract or when the Company has a right to consideration that is conditioned upon transfer of a good or service to a customer. Contract liabilities are recognized as revenue as (or when) the Company performs under the contract.
Commitments and Contingent Liabilities	The Company is involved in various litigation, claims and administrative proceedings, including those related to environmental (including asbestos) and legal matters. In accordance with ASC 450, Contingencies, the Company records accruals for loss contingencies when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. These accruals are generally based upon a range of possible outcomes. If no amount within the range is a better estimate than any other, the Company accrues the minimum amount. In addition, these estimates are reviewed periodically and adjusted to reflect additional information when it becomes available. The Company is unable to predict the final outcome of the following matters based on the information currently available, except as otherwise noted. However, the Company does not believe that the resolution of any of these matters will have a material adverse effect upon its results of operations or financial condition. Environmental Matters The Company’s operations are subject to environmental regulation by various authorities. The Company has accrued for the costs of environmental remediation activities, including but not limited to investigatory, remediation, operating and maintenance costs and performance guarantees. The most likely cost to be incurred is accrued based on an evaluation of currently available facts with respect to individual sites, including the technology required to remediate, current laws and regulations and prior remediation experience. For sites with multiple responsible parties, the Company considers its likely proportionate share of the anticipated remediation costs and the ability of other parties to fulfill their obligations in establishing a provision for these costs. Accrued environmental liabilities are not reduced by potential insurance reimbursements and are undiscounted. Asbestos Matters The Company has been named as a defendant in lawsuits alleging personal injury as a result of exposure to asbestos allegedly integrated into certain Carrier products or business premises. While the Company has never manufactured asbestos and no longer incorporates it into any currently-manufactured products, certain products that the Company no longer manufactures contained components incorporating asbestos. A substantial majority of these asbestos-related claims have been dismissed without payment or have been covered in full or in part by insurance or other forms of indemnity. Additional cases were litigated and settled without any insurance reimbursement. The amounts recorded for asbestos-related liabilities are based on currently available information and assumptions that the Company believes are reasonable and are made with input from outside actuarial experts. These amounts are undiscounted and exclude the Company’s legal fees to defend the asbestos claims, which are expensed as incurred. In addition, the Company has recorded insurance recovery receivables for probable asbestos-related recoveries.

BASIS OF PRESENTATION (Policies)

6 Months Ended

Jun. 30, 2024

The Unaudited Condensed Consolidated Financial Statements include all accounts of the Company and its wholly-owned and majority-owned subsidiaries in which it has control. Inter-company accounts and transactions have been eliminated. Related party transactions between the Company and its equity method investees have not been eliminated. Non-controlling interest represents a non-controlling investor's interests in the results of subsidiaries that the Company controls and consolidates.

Recently Issued and Adopted Accounting Pronouncements

The Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") is the sole source of authoritative U.S. GAAP other than SEC issued rules and regulations that apply only to SEC registrants. The FASB issues Accounting Standards Updates ("ASU") to communicate changes to the codification. The Company considers the applicability and impact of all ASUs. ASUs pending adoption were assessed and determined to be either not applicable or are not expected to have a material impact on the accompanying Unaudited Condensed Consolidated Financial Statements.

Recently Issued Accounting Pronouncements

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (“ASU 2023-07”), which requires public entities to disclose information about their reportable segments’ significant expenses on an interim and annual basis. In addition, the amendments clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, provide new segment disclosure requirements for entities with a single reportable segment and contain other disclosure requirements. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023 and interim periods beginning after December 15, 2024, with early adoption permitted. The Company is currently assessing the impact of this ASU on its financial statements.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures ("ASU 2023-09"), which requires public entities to disclose disaggregated information about their effective tax rate reconciliation as well as information on income taxes paid. ASU 2023-09 is effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The Company is currently assessing the impact of this ASU on its financial statements.

On March 6, 2024, the SEC adopted new rules designed to enhance public company disclosures related to the risks and impacts of climate-related matters. The rules amend the provisions of both Regulation S-K and Regulation S-X to require disclosure of climate-related risks, transition plans, targets and goals, risk management and governance as well as require disclosure of the financial effects of severe weather events and other natural conditions as well as the use of carbon offsets or renewable energy credits. Disclosure requirements will begin phasing in for fiscal years beginning on or after January 1, 2025, subject to legal challenges and the SEC's voluntary stay of the disclosure requirements. The Company will continue to assess the impact of these new rules on its financial statements while the stay is in place.

Fair Value Measurements

ASC 820, Fair Value Measurement ("ASC 820"), defines fair value as the price that would be received if an asset is sold or the price paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820 also establishes a three-level fair value hierarchy that prioritizes information used in developing assumptions when pricing an asset or liability as follows:

•Level 1: Observable inputs such as quoted prices in active markets;

•Level 2: Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and

•Level 3: Unobservable inputs where there is little or no market data, which requires the reporting entity to develop its own assumptions.

ASC 820 requires the use of observable market data, when available, in making fair value measurements. When inputs used to measure fair value fall within different levels of the hierarchy, the level within which the fair value measurement is categorized is based on the lowest level input that is significant to the fair value measurement.

In the normal course of business, the Company is exposed to certain risks arising from business operations and economic factors, including foreign currency and commodity price risk. These exposures are managed through operational strategies and the use of undesignated hedging contracts. The Company's derivative assets and liabilities are measured at fair value on a recurring basis using internal models based on observable market inputs, such as forward, interest, contract and discount rates with changes in fair value reported in Other income (expense), net in the accompanying Unaudited Condensed Consolidated Statement of Operations.

During 2022, the Company entered into cross currency swaps with various financial institutions to fund a portion of the Yen-denominated purchase price of TCC. The cross currency swaps are measured at fair value on a recurring basis using observable market inputs, such as forward, discount and interest rates as well as credit default swap spreads. The Company designated the cross currency swaps as a partial hedge of its investment in certain subsidiaries whose functional currency is the Japanese Yen in order to manage foreign currency translation risk. As a result, changes in the fair value of the swaps are recorded in Equity in the accompanying Unaudited Condensed Consolidated Balance Sheet. From time to time, the Company settles and enters into new cross currency swaps with the same purpose and characteristics as initially established.

The remaining portion of the Yen-denominated purchase price was funded by the Japanese Term Loan Facility. The carrying value of the facility is translated on a recurring basis using the exchange rate at the end of the applicable period and approximates its fair value. The Company designated the Japanese Term Loan Facility as a partial hedge of its investment in certain subsidiaries whose functional currency is the Japanese Yen in order to manage foreign currency translation risk. As a result, changes in the carrying value of the Japanese Term Loan Facility associated with foreign exchange rate movements are recorded in Equity in the Unaudited Condensed Consolidated Balance Sheet.

During 2023, the Company entered into window forward contracts with Bank of America N.A. and JPMorgan Chase Bank N.A. to mitigate the foreign currency risk of the expected cash outflows associated with the Euro-denominated purchase price of the VCS Business. The instruments had an aggregate notional amount of €7 billion and were measured at fair value on a recurring basis using observable market inputs, such as forward, discount and interest rates with changes in fair value reported in Other income (expense), net in the accompanying Unaudited Condensed Consolidated Statement of Operations. During 2023, the Company recognized a $96 million loss on the mark-to-market valuation of its window forward contracts. The Company settled the window forward contracts on January 2, 2024, upon the acquisition of the VCS Business and recognized an additional $86 million loss.

During 2023, the Company entered into several interest rate swap contracts to mitigate interest rate exposure on the forecasted issuance of long-term debt. The contracts had an aggregate notional amount of $1.525 billion and were designated as cash flow hedges with changes in fair value reported in Equity in the accompanying Unaudited Condensed Consolidated Balance Sheet. Fair value was measured on a recurring basis using observable market inputs, such as forward, discount and interest rates. In November 2023, the contracts were settled upon the issuance of the underlying debt. As a result, the Company deferred a net unrecognized gain of $58 million in Equity which will be subsequently recognized in Interest expense over the term of the related notes which range from 2034 to 2044. The amount expected to be amortized during 2024 is a net gain of $5 million.

The fair value of the Company's long-term debt is measured based on observable market inputs which are considered Level 1 within the fair value hierarchy. The carrying value of cash and cash equivalents, accounts receivable, accounts payable and short-term borrowings approximate fair value due to the short-term nature of these accounts and would be classified as Level 1 in the fair value hierarchy. The Company's financing leases and project financing obligations, included in Long-term debt and Current portion of long-term debt on the accompanying Unaudited Condensed Consolidated Balance Sheet, approximate fair value and are classified as Level 3 in the fair value hierarchy.

Product Warranties

In the ordinary course of business, the Company provides standard warranty coverage on its products. Provisions for these amounts are established at the time of sale and estimated primarily based on product warranty terms and historical claims experience. In addition, the Company incurs discretionary costs to service its products in connection with specific product performance issues. Provisions for these amounts are established when they are known and estimable. The Company assesses the adequacy of its initial provisions and will make adjustments as necessary based on known or anticipated claims or as new information becomes available that suggests it is probable that future costs will be different than estimated amounts. Amounts associated with these provisions are classified on the accompanying Unaudited Condensed Consolidated Balance Sheet as Accrued liabilities or Other long-term liabilities based on their anticipated settlement date.

Revenue Recognition

The Company accounts for revenue in accordance with ASC 606: Revenue from Contracts with Customers. Revenue is recognized when control of a good or service promised in a contract (i.e., performance obligation) is transferred to a customer. Control is obtained when a customer has the ability to direct the use of and obtain substantially all of the remaining benefits from that good or service. A significant portion of the Company's performance obligations are recognized at a point-in-time when control of the product transfers to the customer, which is generally at the time of shipment. The remaining portion of the Company’s performance obligations are recognized over time as the customer simultaneously obtains control as the Company performs work under a contract, or if the product being produced for the customer has no alternative use and the Company has a contractual right to payment.

The timing of revenue recognition, billings and cash collections results in contract assets and contract liabilities. Contract assets relate to the conditional right to consideration for any completed performance under a contract when costs are incurred in excess of billings under the percentage-of-completion methodology. Contract liabilities relate to payments received in advance of performance under a contract or when the Company has a right to consideration that is conditioned upon transfer of a good or service to a customer. Contract liabilities are recognized as revenue as (or when) the Company performs under the contract.

Commitments and Contingent Liabilities

The Company is involved in various litigation, claims and administrative proceedings, including those related to environmental (including asbestos) and legal matters. In accordance with ASC 450, Contingencies, the Company records accruals for loss contingencies when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. These accruals are generally based upon a range of possible outcomes. If no amount within the range is a better estimate than any other, the Company accrues the minimum amount. In addition, these estimates are reviewed periodically and adjusted to reflect additional information when it becomes available. The Company is unable to predict the final outcome of the following matters based on the information currently available, except as otherwise noted. However, the Company does not believe that the resolution of any of these matters will have a material adverse effect upon its results of operations or financial condition.

Environmental Matters

The Company’s operations are subject to environmental regulation by various authorities. The Company has accrued for the costs of environmental remediation activities, including but not limited to investigatory, remediation, operating and maintenance costs and performance guarantees. The most likely cost to be incurred is accrued based on an evaluation of currently available facts with respect to individual sites, including the technology required to remediate, current laws and regulations and prior remediation experience.

For sites with multiple responsible parties, the Company considers its likely proportionate share of the anticipated remediation costs and the ability of other parties to fulfill their obligations in establishing a provision for these costs. Accrued environmental liabilities are not reduced by potential insurance reimbursements and are undiscounted.

Asbestos Matters

The Company has been named as a defendant in lawsuits alleging personal injury as a result of exposure to asbestos allegedly integrated into certain Carrier products or business premises. While the Company has never manufactured asbestos and no longer incorporates it into any currently-manufactured products, certain products that the Company no longer manufactures contained components incorporating asbestos. A substantial majority of these asbestos-related claims have been dismissed without payment or have been covered in full or in part by insurance or other forms of indemnity. Additional cases were litigated and settled without any insurance reimbursement.

The amounts recorded for asbestos-related liabilities are based on currently available information and assumptions that the Company believes are reasonable and are made with input from outside actuarial experts. These amounts are undiscounted and exclude the Company’s legal fees to defend the asbestos claims, which are expensed as incurred. In addition, the Company has recorded insurance recovery receivables for probable asbestos-related recoveries.