XML 39 R27.htm IDEA: XBRL DOCUMENT
v3.25.3

FINANCIAL INSTRUMENTS (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of Derivative Instruments | A summary of the notional amounts of these interest rate swap agreements as of September 30, 2025 and December 31, 2024 was as follows:
|  | Notional Amount
Debt Instrument |  | September 30, 2025 |  | December 31, 2024
5.00% Senior Notes due December 2034 |  | $ | 850 |  |  | $ | 700 |
2.80% Senior Notes due June 2031 |  | 550 |  |  | — |
6.40% Senior Notes due November 2033 |  | 400 |  |  | — |
Total notional amounts |  | $ | 1,800 |  |  | $ | 700 |
Schedule of Debt Instrument Fair Value Basis Adjustment Attributable to Hedged Debt | As of September 30, 2025 and December 31, 2024, the following amounts were recorded on the consolidated balance sheets related to cumulative basis adjustments for fair value hedges included in the carrying amount of long-term debt:
| Carrying Amount of Hedged Long-Term Debt |  | Hedge Accounting Basis Adjustment (a) |  | Carrying Amount of Hedged Long-Term Debt |  | Hedge Accounting Basis Adjustment (a)
Balance Sheet Classification | September 30, 2025 |  | September 30, 2025 |  | December 31, 2024 |  | December 31, 2024
Long-term debt | $ | 1,803 |  |  | $ | 20 |  |  | $ | 658 |  |  | $ | (29) |
(a) The balance includes $2 million and $5 million of remaining unamortized hedging adjustments on discontinued relationships as of September 30, 2025 and December 31, 2024, respectively.
Schedule of Fair Value Hedge Accounting on the Statement of Operations | The following table presents the effect of fair value hedge accounting on the consolidated statement of operations for the three and nine months ended September 30, 2025:
|  |  | Three Months Ended September 30, 2025 |  | Nine Months Ended September 30, 2025 |  |
|  | Interest Expense, Net |  | Interest Expense, Net |  |
Total for line item in which the effects of fair value hedges are recorded |  | $ | (66) |  |  | $ | (200) |  |  |
Gain (loss) on fair value hedging relationships: |  |  |  |  |  |
Hedged items (Long-term debt) |  | $ | (1) |  |  | $ | (52) |  |  |
Derivatives designated as hedging instruments |  | $ | 1 |  |  | $ | 52 |  |  |
Schedule of Derivative Instruments at Fair Value | A summary of the fair values of derivative instruments in the consolidated balance sheets was as follows:
| September 30, 2025 |  | December 31, 2024
| Balance Sheet Classification |  | Fair Value |  | Balance Sheet Classification |  | Fair Value
Derivatives Designated as Hedging Instruments |  |  |  |  |  |  |
Fixed-to-variable interest rate swap agreements | Other assets |  | $ | 18 |  |  | Other liabilities |  | $ | 34 |

X
- Definition Schedule of Debt Instrument Fair Value Basis Adjustment Attributable to Hedged Debt [Table Text Block] + References No definition available. + Details
Name: | dgx_ScheduleofDebtInstrumentFairValueBasisAdjustmentAttributabletoHedgedDebtTableTextBlock
Namespace Prefix: | dgx_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 182 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480401/815-10-55-182 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B + Details
Name: | us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item. + References No definition available. + Details
Name: | us-gaap_ScheduleOfDerivativeInstrumentsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for fair value hedging instruments of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B + Details
Name: | us-gaap_ScheduleOfFairValueHedgingInstrumentsStatementsOfFinancialPerformanceAndFinancialPositionLocationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration