XML 111 R27.htm IDEA: XBRL DOCUMENT
v3.24.2

CASH, CASH EQUIVALENTS AND INVESTMENTS - UNRESTRICTED AND RESTRICTED (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Cash and cash equivalents | $ 177 | $ 287
Investments | 72 | 65
Total restricted cash, cash equivalents and investments | 893 | 1,269
Investments, noncurrent | 156 | 143
Restricted cash, cash equivalents and investments, noncurrent | 163 | 158
Total | 1,461 | 1,922
Payroll funds collected |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments | 605 | 1,067
Collateral for health benefits claims |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments | 147 | 144
Collateral for workers' compensation claims |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments | 48 | 56
Restricted cash, cash equivalents and investments, noncurrent | 163 | 158
Trust for our HRIS Users |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments | 91 | 0
Other security deposits |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments | 2 | 2
Cash and cash equivalents |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Cash and cash equivalents | 177 | 287
Investments | 0 | 0
Total restricted cash, cash equivalents and investments | 780 | 1,154
Investments, noncurrent | 0 | 0
Total | 994 | 1,466
Cash and cash equivalents | Payroll funds collected |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments | 605 | 1,067
Cash and cash equivalents | Collateral for health benefits claims |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments | 34 | 31
Cash and cash equivalents | Collateral for workers' compensation claims |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments | 48 | 54
Restricted cash, cash equivalents and investments, noncurrent | 37 | 25
Cash and cash equivalents | Trust for our HRIS Users |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments |  | 0
Cash and cash equivalents | Other security deposits |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments | 2 | 2
Available-for-sale marketable securities |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Cash and cash equivalents | 0 | 0
Investments | 72 | 65
Total restricted cash, cash equivalents and investments | 113 | 115
Investments, noncurrent | 156 | 143
Total | 467 | 456
Available-for-sale marketable securities | Payroll funds collected |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments | 0 | 0
Available-for-sale marketable securities | Collateral for health benefits claims |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments | 113 | 113
Available-for-sale marketable securities | Collateral for workers' compensation claims |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments | 0 | 2
Restricted cash, cash equivalents and investments, noncurrent | 126 | 133
Available-for-sale marketable securities | Trust for our HRIS Users |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments | 0 | 0
Available-for-sale marketable securities | Other security deposits |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |
Total restricted cash, cash equivalents and investments | $ 0 | $ 0

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481830/320-10-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479130/326-30-45-1 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecuritiesNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483467/210-10-45-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-4 + Details
Name: | us-gaap_CashAndCashEquivalentsAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash and investments whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 954 -SubTopic 210 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477220/954-210-45-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 954 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478600/954-210-50-2 + Details
Name: | us-gaap_RestrictedCashAndInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The current cash, cash equivalents and investments that are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes current cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(9)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 954 -SubTopic 210 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477220/954-210-45-4 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 954 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478600/954-210-50-2 + Details
Name: | us-gaap_RestrictedCashAndInvestmentsCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The noncurrent cash, cash equivalents and investments that is restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits classified as long-term; that is not expected to be released from such existing restrictions within one year of the balance sheet date or operating cycle, whichever is longer. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes noncurrent cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 954 -SubTopic 210 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477220/954-210-45-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 954 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478600/954-210-50-2 + Details
Name: | us-gaap_RestrictedCashAndInvestmentsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(8)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_ShortTermInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | tnet_CollateralbyTypeAxis=tnet_PayrollFundsCollectedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tnet_CollateralbyTypeAxis=tnet_HealthBenefitClaimsCollateralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tnet_CollateralbyTypeAxis=tnet_WorkersCompensationClaimsCollateralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tnet_CollateralbyTypeAxis=tnet_TrustForOurHRISUsersCollateralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tnet_CollateralbyTypeAxis=tnet_InsuranceCarriersSecurityDepositsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=tnet_AvailableForSaleMarketableSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |