| Pay vs Performance Disclosure | 12 Months Ended |
| Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) |
| Pay vs Performance Disclosure [Line Items] | | | |
| Pay vs Performance [Table Text Block] | Average Summary Compensation Table Total for Non-PEO NEOs ($) 22 Average Compensation Actually Paid to Non-PEO NEOs ($) Value for Initial Fixed $100 Investmetn13 Based on: Year Summary Compensation Table Total for PEO($) 11 Compensation Actually Paid to PEO ($) 12 Total Shareholder Return ($) 15 Peer Group Total Shareholder Return($) 16 Net Income ($) Adjusted Operating ROE (%) 14 2022 9,106,199 12,022,513 3,275,300 4,098,149 128.89 151.65 597,000,000 11.9 2021 8,866,126 10,939,500 3,185,203 3,763,486 104.19 127.58 1,379,000,000 14.3 2020 8,063,212 5,604,559 3,209,042 2,323,534 86.94 106.96 514,000,000 8 11 Juan C. Andrade served as the Principal Executive Officer (“PEO”) of Everest for all applicable years in this table. 12 The non-PEO 2021 include: John Doucette, Mike Kociancic, 13 Assumes $100 invested on 12/31/19 in Everest common stock, including reinvestment of dividends. 14 Adjusted Operating ROE plan and 60% of actual catastrophe losses for the the 15 For purposes of Everest’s security changes in stock price as well as all distributions or dividends paid to shareholders. The procedure for calculating an index begins with calculating total returns for each individual company in the index. The total return of each company in the index is by the ending shares held, based on a Any dividends paid are reinvested by Each based on its market capitalization at the beginning of the period, relative to the entire group. The market capitalization is in a weighted return for each this proxy refers annual growth 16 The S&P Insurance (Property and Casualty) Index is used as Everest’s peer group for purposes of the pay versus performance disclosure . | | |
| Summary Compensation Table Total for PEO | $ 9,106,199 | $ 8,866,126 | $ 8,063,212 |
| PEO Actually Paid Compensation Amount | 12,022,513 | 10,939,500 | 5,604,559 |
| Non-PEO NEO Average Total Compensation Amount | 3,275,300 | 3,185,203 | 3,209,042 |
| Non-PEO NEO Average Compensation Actually Paid Amount | 4,098,149 | 3,763,486 | 2,323,534 |
| Total Shareholder Return Amount | 128.89 | 104.19 | 86.94 |
| Peer Group Total Shareholder Return Amount | 151.65 | 127.58 | 106.96 |
| Net Income (Loss) | $ 597,000,000 | $ 1,379,000,000 | $ 514,000,000 |
| Company Selected Measure Amount | 0.119 | 0.143 | 0.08 |
| Named Executive Officers, Footnote [Text Block] | Juan C. Andrade served as the Principal Executive Officer (“PEO”) of Everest for all applicable years in this table. | | |
| PEO Name | Juan C. Andrade | Juan C. Andrade | Juan |
| Company Selected Measure Name | Adjusted Operating ROE | | |
| Peer Group Issuers, Footnote [Text Block] | The S&P Insurance (Property and Casualty) Index is used as Everest’s peer group for purposes of the pay versus performance disclosure . | | |
| Adjustment To PEO Compensation, Footnote [Text Block] | Fiscal Year SCT Total $8,063,212 $8,866,126 $9,106,199 – Grant Date Fair Value $(3,752,544) $(4,001,805) $(4,251,644) + Fair Value at Fiscal Year Granted in Fiscal Year $3,169,579 $4,525,158 $4,670,907 ± Change in Fair Value of Outstanding Unvested Prior Fiscal Years17 $(1,312,596) $1,402,574 $2,354,332 ± Change Fiscal Years Fiscal Year18 $(563,092) $147,447 $142,718 Compensation Actually Paid $5,604,559 $10,939,500 $12,022,513 17 Difference between Fair Value from End of Prior Year to End of Current Year 18 Difference between Fair Value from End of Prior Year to Vesting Date 19 Difference between Fair Value from End of Prior Year to End of Current Year 20 Difference between Fair Value from End of Prior Year to Vesting Date 21 In 2021, the change in actuarial present value was negative $11,030 for Mr. Doucette and $81,008 for Mr. Mukherjee. Under the rule, the change in value 22 The change the | | |
| Adjustment to Non-PEO NEO Compensation Footnote [Text Block] | Fiscal Year Average SCT Total $3,209,042 $3,185,203 $3,275,300 – Grant Date Fair Value $(1,799,573) $(1,164,932) $(1,276,247) + Fair Value at Fiscal Year Awards Granted in Fiscal Year $1,455,572 $1,317,281 $1,402,100 ± Change in Fair Value of Outstanding Unvested Granted in Prior Fiscal Years19 $(236,502) $362,214 $563,880 ± Change in Fair Value in Prior Fiscal Years Satisfied During Fiscal Year20 $(95,518) $49,873 $114,067 – Change in Actuarial Present Value of Accumulated Benefit Under Defined Benefit Pension Plan $(235,821) $(16,202) N/A + Service cost and prior service cost $26,334 $30,048 $19,050 Average Compensation Actually Paid $2,323,534 $3,763,486 $4,098,149 17 Difference between Fair Value from End of Prior Year to End of Current Year 18 Difference between Fair Value from End of Prior Year to Vesting Date 19 Difference between Fair Value from End of Prior Year to End of Current Year 20 Difference between Fair Value from End of Prior Year to Vesting Date 21 In 2021, the change in actuarial present value was negative $11,030 for Mr. Doucette and $81,008 for Mr. Mukherjee. Under the rule, the change in value 22 The change the | | |
| Total Shareholder Return Vs Peer Group [Text Block] | Comparison Everest | | |
| Compensation Actually Paid vs. Total Shareholder Return [Text Block] | Compensation Actually Paid (“CAP”) versus Cumulative Total Shareholder Return | | |
| Compensation Actually Paid vs. Net Income [Text Block] | Compensation Actually Paid (“CAP”) versus Net Income | | |
| Compensation Actually Paid vs. Company Selected Measure [Text Block] | Compensation | | |
| Tabular List [Table Text Block] | Adjusted Operating ROE Combined Ratio Operating Expense Ratio Total Shareholder Return (as defined at Everest’s Investor Day 23 ) Gross Written Premium Annual Growth Rate | | |
| PEO [Member] | Grant Date Fair Value of Stock Awards Granted in Fiscal Year [Member] | | | |
| Pay vs Performance Disclosure [Line Items] | | | |
| Adjustment to Compensation Amount | $ (4,251,644) | $ (4,001,805) | $ (3,752,544) |
| PEO [Member] | Fair Value at Fiscal Year-End of Outstanding Unvested Stock Awards Granted in Fiscal Year [Member] | | | |
| Pay vs Performance Disclosure [Line Items] | | | |
| Adjustment to Compensation Amount | 4,670,907 | 4,525,158 | 3,169,579 |
| PEO [Member] | Change in Fair Value of Outstanding Unvested Stock Awards Granted in Prior Fiscal Years [Member] | | | |
| Pay vs Performance Disclosure [Line Items] | | | |
| Adjustment to Compensation Amount | 2,354,332 | 1,402,574 | (1,312,596) |
| PEO [Member] | Change in Fair Value as of Vesting Date of Stock Awards Granted in Prior Fiscal Years for Which Applicable Vesting Conditions Were Satisfied During Fiscal Year [Member] | | | |
| Pay vs Performance Disclosure [Line Items] | | | |
| Adjustment to Compensation Amount | 142,718 | 147,447 | (563,092) |
| Non-PEO NEO [Member] | Grant Date Fair Value of Stock Awards Granted in Fiscal Year [Member] | | | |
| Pay vs Performance Disclosure [Line Items] | | | |
| Adjustment to Compensation Amount | (1,276,247) | (1,164,932) | (1,799,573) |
| Non-PEO NEO [Member] | Fair Value at Fiscal Year-End of Outstanding Unvested Stock Awards Granted in Fiscal Year [Member] | | | |
| Pay vs Performance Disclosure [Line Items] | | | |
| Adjustment to Compensation Amount | 1,402,100 | 1,317,281 | 1,455,572 |
| Non-PEO NEO [Member] | Change in Fair Value of Outstanding Unvested Stock Awards Granted in Prior Fiscal Years [Member] | | | |
| Pay vs Performance Disclosure [Line Items] | | | |
| Adjustment to Compensation Amount | 563,880 | 362,214 | (236,502) |
| Non-PEO NEO [Member] | Change in Fair Value as of Vesting Date of Stock Awards Granted in Prior Fiscal Years for Which Applicable Vesting Conditions Were Satisfied During Fiscal Year [Member] | | | |
| Pay vs Performance Disclosure [Line Items] | | | |
| Adjustment to Compensation Amount | 114,067 | 49,873 | (95,518) |
| Non-PEO NEO [Member] | Change in Actuarial Present Value of Accumulated Benefit Under Defined Benefit Pension Plan [Member] | | | |
| Pay vs Performance Disclosure [Line Items] | | | |
| Adjustment to Compensation Amount | | (16,202) | (235,821) |
| Non-PEO NEO [Member] | Service Cost and Prior Service Cost [Member] | | | |
| Pay vs Performance Disclosure [Line Items] | | | |
| Adjustment to Compensation Amount | $ 19,050 | $ 30,048 | $ 26,334 |
