75000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 75010 - Statement - Statements of Net Assets Available for Benefits link:presentationLink link:calculationLink link:definitionLink 75020 - Statement - Statement of Changes in Net Assets Available For Benefits link:presentationLink link:calculationLink link:definitionLink 75030 - Disclosure - Description of the Plan link:presentationLink link:calculationLink link:definitionLink 75040 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 75050 - Disclosure - Description of the Investment Funds link:presentationLink link:calculationLink link:definitionLink 75060 - Disclosure - Investment Contracts with Third Parties link:presentationLink link:calculationLink link:definitionLink 75070 - Disclosure - Fair Value of Measurements link:presentationLink link:calculationLink link:definitionLink 75080 - Disclosure - Risks and Uncertainties link:presentationLink link:calculationLink link:definitionLink 75090 - Disclosure - Party-in-Interest Transactions link:presentationLink link:calculationLink link:definitionLink 75100 - Disclosure - Tax Exempt Status link:presentationLink link:calculationLink link:definitionLink 75110 - Disclosure - Plan Termination link:presentationLink link:calculationLink link:definitionLink 75120 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 75130 - Disclosure - Schedule of Assets (Held at End of Year) link:presentationLink link:calculationLink link:definitionLink 75140 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 75150 - Disclosure - Description of the Plan (Tables) link:presentationLink link:calculationLink link:definitionLink 75160 - Disclosure - Fair Value of Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 75170 - Disclosure - Schedule of Assets (Held at End of Year) (Tables) link:presentationLink link:calculationLink link:definitionLink 75180 - Disclosure - Description of the Plan - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75190 - Disclosure - Description of the Plan - Summary of Percentage of Compensation the Company Contributes (Details) link:presentationLink link:calculationLink link:definitionLink 75200 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75210 - Disclosure - Description of the Investment Funds - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75220 - Disclosure - Investment Contracts with Third Parties - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75230 - Disclosure - Fair Value Measurements - Summary of Level, within Fair Value Hierarchy, Investments of Plan Reported at Fair Value Held by Plan Trust (Details) link:presentationLink link:calculationLink link:definitionLink 75240 - Disclosure - Party-in-Interest Transactions - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75250 - Disclosure - Tax Exempt Status - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75260 - Disclosure - Subsequent Events - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75270 - Disclosure - Schedule of Assets (Held at End of Year) - Schedule of Assets (Details) link:presentationLink link:calculationLink link:definitionLink 75270 - Disclosure - Schedule of Assets (Held at End of Year) - Schedule of Assets (Details) [Default] link:presentationLink link:calculationLink link:definitionLink EBP, Note Receivable from Participant, Minimum Loan, Amount EBP, Note Receivable from participant, Minimum loan, amount. Employee benefit plan, notes receivable from participant, minimum loan, amount EBP, Change in Net Asset Available for Benefit, Increase [Abstract] ADDITIONS: Employee Benefit Plan, Qualified Domestic Relations Order Fee Employee benefit plan, qualified domestic relations order fee. Employee benefit plan, QDRO Fee EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Distributions to participants Fees paid to Individual participant EBP, Employer, Common Stock, Class B [Member] Class B Common Stock Target Retirement Two Thousand Thirty Five Fund [Member] Target retirement two thousand thirty five fund. The Target Retirement 2035 Fund Fair Value, Inputs, Level 2 [Member] Level 2 Inputs EBP, Related Party and Party-in-Interest Transactions [Line Items] Document Fiscal Period Focus EBP, Fully Benefit-Responsive Investment Contract [Table] EBP, Forfeited Nonvested Account, Decrease from Employer Contribution Employee benefit plan forfeited balance used to reduce Company contribution EBP, Tax Status [Abstract] Target retirement two thousand thirty fund. Target Retirement Two Thousand Thirty Fund [Member] The Target Retirement 2030 Fund Employee Benefit Plan, Description of the Investment Funds [Abstract] Employee Benefit Plan, Description of the Investment Funds. EBP, Forfeited Nonvested Account Employee benefit plan, unused forfeited balances EBP, Description of Plan [Text Block] Description of the Plan EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Interest income from notes receivable from participants Investment, Identifier [Axis] EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Administrative expenses Fees EBP, Description of Plan [Line Items] Employee Benefit Plan, Fees Charged to Participants for Administrative and Operating Expenses Employee benefit plan, fees charged to participants for administrative and operating expenses. Employee benefit plan, fees charged to participants for administrative and operating expenses EBP, Employer Contribution, Matching Percentage Matching contribution percentage Percentage of participants contribution 36 - 40 Thirty Six To Forty Age [Member] 36 - 40 EBP, Investment, Issuer Name [Extensible Enumeration] EBP, Investment, Fair Value and NAV [Abstract] Employee Benefit Plan Participant Contribution Automatic Deferral Rate Limit Percentage Employee Benefit Plan Participant Contribution Automatic Deferral Rate Limit Percentage Employee benefit plan participant contribution automatic deferral rate limit percentage Under Age Thirty Six [Member] Under Age 36 Under Age 36 EBP, Accounting Policy [Line Items] EBP, Schedule of Asset Held for Investment [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] Employee Benefit Plan, Self-Directed Brokerage Account, Annual Fee Charged Amount Employee benefit plan, self-directed brokerage account, annual fee charged amount. Employee benefit plan, self-directed brokerage account, annual fee charged EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Employee benefit plan, notes receivable from participant, account, maximum borrowing, amount Age Sixty Two [Member] Age Sixty Two. Age 62 Based on Market Interest Rates at Time Initial Asset Purchased [Member] Based on market interest rates at time initial asset purchased. Based on Market Interest Rates at Time Initial Asset Purchased Common Collective Trust [Member] Common collective trust funds Amendment Flag EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash Employer EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash, Total EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] DEDUCTIONS: EBP, Payment to Participant [Policy Text Block] Payment of Benefits EBP, Investment, Excluding Plan Interest in Master Trust, Fair and Contract Value Total investment held by the Plan Trust Employee Benefit Plan, Investment Contracts With Third Parties [Text Block] Employee benefit plan, investment contracts with third parties. Investment Contracts with Third Parties EBP, Participant Contribution, Receivable Contributions receivable EBP, Schedule of Asset Held for Investment [Line Items] Fair Value Hierarchy and NAV [Axis] EBP, Investment, Current Value, Type [Extensible Enumeration] Employee benefit plan note receivable from participant account borrowing amount to account vested percentage Employee benefit plan note receivable from participant account borrowing amount to account vested percentage Investment Type [Axis] Document Type Entity Central Index Key Subsequent Event Type [Domain] Fees paid to Individual participant for loan initiations, QDROs and brokerage account maintenance EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant for Loans, QDROs, and Brokerage Account Maintenance EBP, Change In net asset available for benefit, decrease from payment to participant for loans, QDROs, and Brokerage account maintenance. Self-Directed Brokerage Accounts [Member] Self-directed brokerage accounts. Self-directed brokerage accounts EBP, Investment [Policy Text Block] Valuation of Investments After Age Fifty Five or Due to Retirement [Member] After age fifty five or due to retirement. Participation Ends Due to Retirement or After Age 55 EBP, Employer Contribution, Participant Compensation Percentage EBP, employer contribution, participant compensation percentage. Contribution percentage Employee Benefit Plan, Plan Amendment Description Employee benefit plan, plan amendment description. Plan amendment description 51 - 55 Fifty One To Fifty Five Age [Member] 51- 55 EBP, Contribution, Participating Employer [Axis] EBP, Subsequent Event [Table] EBP, Accounting Policy [Table] EBP, Subsequent Event [Abstract] EBP, Basis of Accounting [Policy Text Block] Basis of Accounting Forty One to Forty Five Age [Member] 41 – 45 41 - 45 Age 63 Age Sixty Three [Member] Age Sixty Three. Employee Benefit Plan Percentage of Increase in Plan Participants Contribution Per Year Employee benefit plan percentage of increase in plan participants contribution per year. Percentage of increase in plan participants contribution per year EBP, Description of Plan [Table] Empower Trust Company, LLC Empower Trust Company, LLC [Member] Empower Trust Company, LLC. Trustee Subsequent Event [Member] Subsequent Event EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment Interest and dividend income EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment, Total Interest and dividends Proceeds from fund sold EBP, Proceeds from Company Stock Sale EBP, Proceeds from Company stock sale. Target Retirement Two Thousand Forty Five Fund [Member] Target retirement two thousand forty five fund. The Target Retirement 2045 Fund Employee Benefit Plan, Description of the Investment Funds [Line Items] Employee Benefit Plan, Description of the Investment Funds. Minimum [Member] Minimum EBP, Related Party and Party-in-Interest Transactions [Text Block] Party-in-Interest Transactions EBP, Change in Net Asset Available for Benefit, Increase Total additions EBP, Change in Net Asset Available for Benefit, Increase from Contribution Total contributions EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] Employee Benefit Plan Current Target Asset Allocation in Equities Percentage Employee benefit plan current target asset allocation in equities percentage. Current target asset allocation in equities percentage Berkshire Hathaway Class B Stock Fund [Member] Berkshire hathaway class b stock fund. Berkshire Hathaway Class B stock fund Age 61 Age Sixty One [Member] Age Sixty One. EBP, Expense [Policy Text Block] Expenses EBP, Contribution [Table Text Block] Summary of Percentage of Compensation the Company Contributes Target Retirement Two Thousand Twenty Five Fund [Member] Target retirement two thousand twenty five fund. The Target Retirement 2025 Fund Initial Crediting Rate Minimum Initial crediting rate minimum. Initial crediting rate minimum Scenario [Axis] EBP, Statement of Net Asset Available for Benefit [Abstract] EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Contributions: Employee Benefit Plan Self Directed Brokerage Account Investment Election Limit Percentage Employee benefit plan self-directed brokerage account investment election limit percentage. Employee benefit plan self-directed brokerage account investment election limit percentage EBP, Tax Determination Letter, Date Tax determination letter, date EBP, Participant Contribution, Automatic, Deferral Rate Percentage of participants contribution EBP, Contribution, Participating Employer [Domain] EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Ending Balance EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Beginning Balance EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Total Investment at fair value Investments at fair value held by Plan Trust EBP, Use of Estimate [Policy Text Block] Use of Estimates Mutual Fund [Member] Mutual Funds Entity [Domain] Two Year of Eligible Vesting Service [Member] Two year of eligible vesting service. After Two Years of Eligible Service Employee benefit plan maximum Annual catch up contribution limit amount. Employee Benefit Plan Maximum Annual Catch Up Contribution Limit Amount Employee benefit plan maximum annual catch-up contributions limit amount EBP, Summary of Accounting Policy [Text Block] Summary of Significant Accounting Policies EBP 003 EBP 003 [Member] EBP 003 EBP, Investment, Fair Value and NAV [Text Block] Fair Value Measurements Employee Benefit Plan Vested Percentage Employee benefit plan vested percentage. Vest percentage EBP, Description of Plan and Accounting Change [Abstract] EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Notes receivable from participants Employee Benefit Plan, Redemption Fee Employee benefit plan, redemption fee. Employee benefit plan, redemption fee EBP, Statement of Change in Net Asset Available for Benefit [Line Items] Statistical Measurement [Domain] Employee Benefit Plan Participant Contribution Pre-Tax and Roth Limit Amount Employee benefit plan participant contribution pre-tax and roth limit amount Employee benefit plan participant contribution pre-tax and roth limit amount. EBP, Note Receivable from Participant Notes receivable from participants Document Period End Date The Target Retirement 2040 Fund Target Retirement Two Thousand Forty Fund [Member] Target retirement two thousand forty fund. Fair Value Hierarchy and NAV [Domain] Employee Benefit Plan, Fees Charged for Loan Employee benefit plan, fees charged for loan. Employee benefit plan, fee charged for each loan taken by participant EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Employee benefit plan, note receivable from participant, account, maximum borrowing, to total account, percentage EBP, Tax Determination Letter, Obtained [true false] Tax determination letter, obtained EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Plan Termination [Text Block] Plan Termination 46 - 50 Forty Six to Fifty Age [Member] Forty Six to Fifty EBP, Subsequent Event [Text Block] Subsequent Events Target Retirement Two Thousand Fifty Five Fund [Member] Target retirement two thousand fifty five fund. The Target Retirement 2055 Fund EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant for Investment Advice Services EBP, Change in net asset available for benefit, decrease from payment to participant for investment advice services. Fees paid to Individual participant for investment advice service EBP, Investment, Fair and Contract Value [Abstract] Investment in Plan Trust: Cover [Abstract] Cash and Equivalents Interest-Bearing Deposits [Member] Investments [Domain] Investment income: EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Scenario [Domain] EBP, Net Asset Available for Benefit Net assets available for benefits from the financial statements NET ASSETS AVAILABLE FOR BENEFITS NET ASSETS AVAILABLE FOR BENEFITS-End of the year NET ASSETS AVAILABLE FOR BENEFITS-Beginning of the year EBP, Asset Held for Investment, Plan Interest in Master Trust, Current Value Current Value Investments at contract value EBP, Investment, Fair Value and NAV [Table Text Block] Summary of Level, within Fair Value Hierarchy, Investments of Plan Reported at Fair Value Held by Plan Trust EBP, Schedule of Asset Held for Investment [Abstract] Employee benefit plan self directed account balance percentage Employee Benefit Plan Self Directed Account Balance Percentage Employee benefit plan self directed account balance percentage Employee benefit plan participant contribution vesting description. Employee Benefit Plan Participant Contribution Vesting Description Employee benefit plan contribution vesting description EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Current Value Notes Receivable From Participants EBP, Note Receivable from Participant [Policy Text Block] EBP, automatic distribution amount in the event of the separated participant EBP, automatic distribution amount in the event of the separated participant EBP, automatic distribution amount in the event of the separated participant. Target Retirement Two Thousand Fifty Fund [Member] Target retirement two thousand fifty fund. The Target Retirement 2050 Fund EBP, Schedule of Asset Held for Investment [Table Text Block] Schedule of Assets Number of shares purchased EBP, Investment, Purchased, Number of Shares EBP, Fully Benefit-Responsive Investment Contract [Abstract] EBP, Statement of Net Asset Available for Benefit [Table] Employee Benefit Plan Realized Gain Loss On Sale Employee benefit plan realized gain loss On Sale Realized gain loss on sale Document Fiscal Year Focus EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment, Total Net appreciation in fair value of investments Age 61 and Older Age Sixty One And Older [Member] Age 61 and Older Employee Benefit Plan, Investment Contracts With Third Parties [Line Items] Employee benefit plan, investment contracts with third parties line items. EBP, Employer Contribution, Participant Compensation Matched, Percentage Percentage on employee eligible compensation Contribution percentage EBP, Statement of Change in Net Asset Available for Benefit [Table] 56 - 60 Fifty Six to Sixty Age [Member] 56 – 60 Fifty To Fifty Nine Age [Member] 50 - 59. Age 50 - 59 Target Retirement Income Fund [Member] Target retirement income fund. Target Retirement Income Fund Employee Benefit Plan Vesting [Axis] Employee benefit plan vesting [Axis] Three Year of Eligible Vesting Service [Member] Three year of eligible vesting service. After Three Years of Eligible Service EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage Percentage of before-tax contributions of eligible compensation EBP, Fully Benefit-Responsive Investment Contract [Line Items] EBP, Plan Number EBP, Investment, Fair Value and NAV [Line Items] Fixed Income Investments [Member] Synthetic GICs Legal Entity [Axis] EBP, Asset [Abstract] ASSETS EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment Plan interest in BNSF 401(k) Plans Master Trust investment income (Note 4) Total investment income Target Retirement Income Two Thousand Seventy Fund [Member] Target Retirement Income Two Thousand Seventy Fund. The Target Retirement 2070 Fund Subsequent Event Type [Axis] EBP, Investment, Fair Value and NAV [Table] Target Retirement Two Thousand Sixty Five Fund [Member] Target retirement two thousand sixty five fund. The Target Retirement 2065 Fund Employee Benefit Plan Investment Contracts With Third Parties [Abstract] Employee Benefit Plan Investment Contracts With Third Parties. Employee Benefit Plan Vesting [Domain] Employee benefit plan vesting. EBP, Investment Acquired, Cost of Company Stock EBP, Investment acquired, cost of company stock. Purchases amount Employee Benefit Plan, Minimum Initial Transfer Into Self-directed Brokerage Per Account Employee benefit plan, minimum initial transfer into self-directed brokerage per account. Employee benefit plan, minimum initial transfer into self-directed brokerage per account EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] EBP, Asset Held for Investment Total assets held for investment purposes EBP, Subsequent Event [Line Items] EBP, Tax Status [Text Block] Tax Exempt Status EBP, Investment, Sold, Number of Shares Number of shares distributed to participants Maximum [Member] Maximum Employee benefit plan maximum annual compensation limitation amount. Employee Benefit Plan Maximum Annual Compensation Limitation Amount Employee benefit plan maximum annual compensation limitation amount Statistical Measurement [Axis] EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Empower Advisory Group LLC and Advised Assets Group LLC [Member] Empower Advisory Group LLC and Advised Assets Group LLC. Empower Advisory Group LLC and Advised Assets Group LLC Description of the Investment Funds Employee Benefit Plan, Description of the Investment Funds [Text Block] Employee Benefit Plan, Description of the Investment Funds. Employee Benefit Plan, Self Directed Brokerage Account, Fee Charged Per Quarter Employee benefit plan, self directed brokerage account, fee charged per quarter. Employee benefit plan, self-directed brokerage account, fee charged per quarter Entity Registrant Name Fair Value Inputs Level 1 and Level 2 [Member] Fair value inputs level 1 and level 2. Level 1 and Level 2 Inputs EBP, Asset Held for Investment, Participant Loan, Interest Rate Employee benefit plan, asset held for investment, participant loan, interest rate Employee benefit plan schedule of assets held at end of year. Employee Benefit Plan Schedule of Assets Held at End of Year [TextBlock] Schedule of Assets (Held at End of Year) Employee Benefit Plan Number of Years of Service to be Eligible for Thirty Four Percent of Employer Contribution employee benefit plan number of years of service to be eligible for thirty four percent of employer contribution. Employee benefit plan number of years of service to be eligible for thirty four percent of employer contribution Age Sixty [Member] Age Sixty. Age 60 Based on Market Interest Rates at Time Underlying Portfolio First Put Together [Member] Based on market interest rates at time underlying portfolio first put together. Based on Market Interest Rates at Time Underlying Portfolio First Put Together Employee Benefit Plan Current Target Asset Allocation of Fixed Income Percentage Employee benefit plan current target asset allocation of fixed income percentage. Current target asset allocation of fixed income percentage Target Retirement Two Thousand Sixty Fund [Member] Target retirement two thousand sixty fund. The Target Retirement 2060 Fund Employee Benefit Plan Maximum Percentage of Future Investment Election in Class B Stock Fund Employee benefit plan maximum percentage of future investment election in class B stock fund. Employee benefit plan maximum percentage of future investment election in class B stock fund Employee Benefit Plan Number of Years of Service to be Eligible for Hundred Percent of Employer Contribution Employee benefit plan number of years of service to be eligible for hundred percent of employer contribution. Employee benefit plan number of years of service to be eligible for hundred percent of employer contribution EBP, Related Party and Party-in-Interest [Domain] EBP, Related Party and Party-in-Interest [Axis] EBP, Risk and Uncertainty [Text Block] Risks and Uncertainties EBP, Change in Net Asset Available for Benefit, Decrease Total deductions Employee Benefit Plan, Description of the Investment Funds [Table] Employee Benefit Plan, Description of the Investment Funds. Employee Benefit Plan Self-Directed Brokerage Account Minimum Balance Per Account Employee Benefit Plan Self-Directed Brokerage Account Minimum Balance Per Account Employee benefit plan, self-directed brokerage account minimum balance per account Employee Benefit Plan, Investment Contracts With Third Parties [Table] Employee benefit plan, investment contracts with third parties. Fair Value, Inputs, Level 1 [Member] Level 1 Inputs EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution Participant EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Total EBP, Tax Status [Line Items] Entity Tax Identification Number Employee Benefit Plan Number of Years of Service to be Eligible for Sixty Seven Percent of Employer Contribution Employee benefit plan number of years of service to be eligible for sixty seven percent of employer contribution. Employee benefit plan number of years of service to be eligible for sixty seven percent of employer contribution EBP, Change in Net Asset Available for Benefit, Increase (Decrease) Net increase in net assets available for benefits per the financial statements INCREASE IN NET ASSETS After One Year of Eligible Service One Year of Eligible Vesting Service [Member] One year of eligible vesting service. EBP, Tax Status [Table] Employee benefit plan, investment contributions increments percentage Employee Benefit Plan, Investment Contributions, Percentage of Increments Employee benefit plan, investment contributions, percentage of increments. EBP, Investment, Excluding Plan Interest in Master Trust, Contract Value Investment at contract value EBP, Asset Held for Investment, Party-in-Interest [true false] Hartford Small Cap Growth [Member] Goldman Sachs Asset Management. Nomura Small Cap Value Fund [Member] T Rowe Price Mid Cap Val Equity [Member] Russell Small Mid Cap Index Fund. Berkshire Hathaway Class B Common Stock Fund Baird Aggregate Bond Fund Class Institutional [Member] DFA Emerging Markets Core Equity 2 [Member] State Street Global All Cap Equity [Member] Target retirement two thousand seventy fund. Target Retirement Two Thousand Seventy Fund [Member] T Rowe Price Mid Cap Val Equity. DFA Emerging Markets Core Equity 2. S and P five hundred index fund. Fidelity Advisor Diversified Intl [Member] Goldman Sachs Asset Management [Member] Stable value fund interest-bearing cash. Synthetic GICs. Russell Large Cap Growth Index Fund [Member] Berkshire Hathaway Class B Common Stock Fund [Member] S and P Five Hundred Index Fund [Member] Russell Large Cap Value Index Fund. Baird Aggregate Bond Fund. Federated Hermes MDT Mid Cap Growth. Russell Large Cap Growth Index Fund. State Street Investment Management Trust Company. Federated Hermes MDT Mid Cap Growth CL P [Member] Artisan International Small-Mid [Member] State Street Investment Management Trust Company [Member] Stable Value Fund Interest-bearing Cash [Member] State Street Global All Cap Equity. Nomura Small Cap Value Fund [Member] Hartford Small Cap Growth. Fidelity Advisor Diversified Intl. Baird Aggregate Bond Fund Class Institutional. Russell Large Cap Value Index Fund [Member] T Rowe Price Mid Cap Val Equity Trust D [Member] Baird Aggregate Bond Fund [Member] Russell Small Mid Cap Index Fund [Member] Synthetic GICs [Member] Federated Hermes MDT Mid Cap Growth CL P [Member] Artisan International Small-Mid. T Rowe Price Mid Cap Val Equity Trust D [Member] Federated Hermes MDT Mid Cap Growth [Member]