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EMPLOYEE BENEFIT PLANS - FAIR VALUE OF PLAN ASSETS (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]        
Expected return on plan assets 6.75%      
Return Seeking Assets [Member] | Maximum        
Defined Benefit Plan Disclosure [Line Items]        
Expected return on plan assets 12.00%      
Risk Mitigating Assets [Member] | Maximum        
Defined Benefit Plan Disclosure [Line Items]        
Expected return on plan assets 4.00%      
Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 3,182 $ 3,002 $ 2,662 $ 2,160
Expected return on plan assets 6.47% 7.00% 7.00%  
Pension Plan | Cash and cash equivalents        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 18 $ 7 $ 17  
Pension Plan | Equity Securities, Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 849 931 923  
Pension Plan | Equity Securities, International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 385 563 556  
Pension Plan | Equity Securities, Registered Investment Company Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 225 188 95  
Pension Plan | Equity Securities, Registered Investment Company International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 33 32 3  
Pension Plan | Domestic government and government agencies        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 487 272 267  
Pension Plan | International government bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 11 13 9  
Pension Plan | Domestic corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 413 418 346  
Pension Plan | International corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 65 61 62  
Pension Plan | Other        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1 1    
Pension Plan | Accounts receivable/payable, net        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets (20) 13 (38)  
Pension Plan | Investments measured at NAV:        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 657 493 417  
Pension Plan | Venture capital funds and real estate funds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 58 10 5  
Pension Plan | Fair Value, Inputs, Level 1, 2 and 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 2,487 2,486 2,278  
Pension Plan | Level 1        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1,947 1,924 1,819  
Pension Plan | Level 1 | Cash and cash equivalents        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 18 7 17  
Pension Plan | Level 1 | Equity Securities, Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 844 931 923  
Pension Plan | Level 1 | Equity Securities, International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 384 563 555  
Pension Plan | Level 1 | Equity Securities, Registered Investment Company Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 204 151 93  
Pension Plan | Level 1 | Equity Securities, Registered Investment Company International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 33 32 3  
Pension Plan | Level 1 | Domestic government and government agencies        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 463 238 228  
Pension Plan | Level 1 | International government bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
Pension Plan | Level 1 | Domestic corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
Pension Plan | Level 1 | International corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
Pension Plan | Level 1 | Other        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1 2    
Pension Plan | Level 2        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 540 562 459  
Pension Plan | Level 2 | Cash and cash equivalents        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
Pension Plan | Level 2 | Equity Securities, Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 5 0 0  
Pension Plan | Level 2 | Equity Securities, International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1 0 1  
Pension Plan | Level 2 | Equity Securities, Registered Investment Company Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 21 37 2  
Pension Plan | Level 2 | Equity Securities, Registered Investment Company International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
Pension Plan | Level 2 | Domestic government and government agencies        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 24 34 39  
Pension Plan | Level 2 | International government bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 11 13 9  
Pension Plan | Level 2 | Domestic corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 413 418 346  
Pension Plan | Level 2 | International corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 65 61 62  
Pension Plan | Level 2 | Other        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 (1)    
Other Postretirement Benefits Plan        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 1,408 $ 1,399 $ 1,281 1,108
Expected return on plan assets 4.76% 4.64% 6.48%  
Other Postretirement Benefits Plan | Level 1 | Total Sempra investment assets in the fair value hierarchy        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 598 $ 624 $ 602  
Other Postretirement Benefits Plan | Level 2 | Total Sempra investment assets in the fair value hierarchy        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 505 533 478  
San Diego Gas and Electric Company [Member] | Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 859 $ 819 $ 739 600
Expected return on plan assets 6.25% 7.00% 7.00%  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 197 $ 213 $ 197 172
Expected return on plan assets 4.81% 5.51% 6.92%  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Equity Securities, Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 16 $ 17 $ 21  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Equity Securities, International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 7 11 13  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Equity Securities, Registered Investment Company Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 83 76 65  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Equity Securities, Registered Investment Company International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 9 11 11  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Domestic government and government agencies        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 25 40 33  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Domestic corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 8 8 8  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | International corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1 1 1  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Accounts receivable/payable, net        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets (1) (2) (2)  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Investments measured at NAV:        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 49 51 47  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Fair Value, Inputs, Level 1, 2 and 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 149 164 152  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 1        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 138 146 134  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 1 | Equity Securities, Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 16 17 21  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 1 | Equity Securities, International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 7 11 13  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 1 | Equity Securities, Registered Investment Company Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 82 69 57  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 1 | Equity Securities, Registered Investment Company International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 9 11 11  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 1 | Domestic government and government agencies        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 24 38 32  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 1 | Domestic corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 1 | International corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 2        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 11 18 18  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 2 | Equity Securities, Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 2 | Equity Securities, International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 2 | Equity Securities, Registered Investment Company Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1 7 8  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 2 | Equity Securities, Registered Investment Company International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 2 | Domestic government and government agencies        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1 2 1  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 2 | Domestic corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 8 8 8  
San Diego Gas and Electric Company [Member] | Other Postretirement Benefits Plan | Level 2 | International corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1 1 1  
SoCalGas | Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 2,095 $ 1,969 $ 1,737 1,385
Expected return on plan assets 6.75% 7.00% 7.00%  
SoCalGas | Other Postretirement Benefits Plan        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 1,178 $ 1,159 $ 1,059 $ 916
Expected return on plan assets 4.70% 4.41% 6.38%  
SoCalGas | Other Postretirement Benefits Plan | Cash and cash equivalents        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 2 $ 1 $ 3  
SoCalGas | Other Postretirement Benefits Plan | Equity Securities, Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 84 76 78  
SoCalGas | Other Postretirement Benefits Plan | Equity Securities, International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 37 46 48  
SoCalGas | Other Postretirement Benefits Plan | Equity Securities, Registered Investment Company Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 147 139 127  
SoCalGas | Other Postretirement Benefits Plan | Equity Securities, Registered Investment Company International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 3 3    
SoCalGas | Other Postretirement Benefits Plan | Domestic government and government agencies        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 258 298 288  
SoCalGas | Other Postretirement Benefits Plan | International government bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 12 15 11  
SoCalGas | Other Postretirement Benefits Plan | Domestic corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 337 349 309  
SoCalGas | Other Postretirement Benefits Plan | International corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 49 42 40  
SoCalGas | Other Postretirement Benefits Plan | Derivative financial instruments        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   1 3  
SoCalGas | Other Postretirement Benefits Plan | Accounts receivable/payable, net        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets (1)   (5)  
SoCalGas | Other Postretirement Benefits Plan | Investments measured at NAV:        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 244 188 157  
SoCalGas | Other Postretirement Benefits Plan | Venture capital funds and real estate funds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 6 1    
SoCalGas | Other Postretirement Benefits Plan | Fair Value, Inputs, Level 1, 2 and 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 929 970 907  
SoCalGas | Other Postretirement Benefits Plan | Level 1        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 441 459 452  
SoCalGas | Other Postretirement Benefits Plan | Level 1 | Cash and cash equivalents        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 2 1 3  
SoCalGas | Other Postretirement Benefits Plan | Level 1 | Equity Securities, Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 83 76 78  
SoCalGas | Other Postretirement Benefits Plan | Level 1 | Equity Securities, International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 37 46 48  
SoCalGas | Other Postretirement Benefits Plan | Level 1 | Equity Securities, Registered Investment Company Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 74 58 52  
SoCalGas | Other Postretirement Benefits Plan | Level 1 | Equity Securities, Registered Investment Company International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 3 3    
SoCalGas | Other Postretirement Benefits Plan | Level 1 | Domestic government and government agencies        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 241 273 267  
SoCalGas | Other Postretirement Benefits Plan | Level 1 | International government bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1 1 1  
SoCalGas | Other Postretirement Benefits Plan | Level 1 | Domestic corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
SoCalGas | Other Postretirement Benefits Plan | Level 1 | International corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
SoCalGas | Other Postretirement Benefits Plan | Level 1 | Derivative financial instruments        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   1 3  
SoCalGas | Other Postretirement Benefits Plan | Level 2        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 488 511 455  
SoCalGas | Other Postretirement Benefits Plan | Level 2 | Cash and cash equivalents        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
SoCalGas | Other Postretirement Benefits Plan | Level 2 | Equity Securities, Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1 0 0  
SoCalGas | Other Postretirement Benefits Plan | Level 2 | Equity Securities, International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
SoCalGas | Other Postretirement Benefits Plan | Level 2 | Equity Securities, Registered Investment Company Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 73 81 75  
SoCalGas | Other Postretirement Benefits Plan | Level 2 | Equity Securities, Registered Investment Company International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
SoCalGas | Other Postretirement Benefits Plan | Level 2 | Domestic government and government agencies        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 17 25 21  
SoCalGas | Other Postretirement Benefits Plan | Level 2 | International government bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 11 14 10  
SoCalGas | Other Postretirement Benefits Plan | Level 2 | Domestic corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 337 349 309  
SoCalGas | Other Postretirement Benefits Plan | Level 2 | International corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 49 42 40  
SoCalGas | Other Postretirement Benefits Plan | Level 2 | Derivative financial instruments        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   0 0  
Other Sempra | Other Postretirement Benefits Plan        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 33 27 25  
Other Sempra | Other Postretirement Benefits Plan | Equity Securities, Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 9 10 9  
Other Sempra | Other Postretirement Benefits Plan | Equity Securities, International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 6 6 4  
Other Sempra | Other Postretirement Benefits Plan | Equity Securities, Registered Investment Company Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 2 0    
Other Sempra | Other Postretirement Benefits Plan | Domestic government and government agencies        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 3 2 4  
Other Sempra | Other Postretirement Benefits Plan | Domestic corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 4 4 3  
Other Sempra | Other Postretirement Benefits Plan | International corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1 1 1  
Other Sempra | Other Postretirement Benefits Plan | Investments measured at NAV:        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 7 4 4  
Other Sempra | Other Postretirement Benefits Plan | Venture capital funds and real estate funds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1      
Other Sempra | Other Postretirement Benefits Plan | Fair Value, Inputs, Level 1, 2 and 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 25 23 21  
Other Sempra | Other Postretirement Benefits Plan | Level 1        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 19 19 16  
Other Sempra | Other Postretirement Benefits Plan | Level 1 | Equity Securities, Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 9 10 9  
Other Sempra | Other Postretirement Benefits Plan | Level 1 | Equity Securities, International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 6 6 4  
Other Sempra | Other Postretirement Benefits Plan | Level 1 | Equity Securities, Registered Investment Company Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 2 1    
Other Sempra | Other Postretirement Benefits Plan | Level 1 | Domestic government and government agencies        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 2 2 3  
Other Sempra | Other Postretirement Benefits Plan | Level 1 | Domestic corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
Other Sempra | Other Postretirement Benefits Plan | Level 1 | International corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
Other Sempra | Other Postretirement Benefits Plan | Level 2        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 6 4 5  
Other Sempra | Other Postretirement Benefits Plan | Level 2 | Equity Securities, Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
Other Sempra | Other Postretirement Benefits Plan | Level 2 | Equity Securities, International        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0 0  
Other Sempra | Other Postretirement Benefits Plan | Level 2 | Equity Securities, Registered Investment Company Domestic        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 (1)    
Other Sempra | Other Postretirement Benefits Plan | Level 2 | Domestic government and government agencies        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1 0 1  
Other Sempra | Other Postretirement Benefits Plan | Level 2 | Domestic corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 4 4 3  
Other Sempra | Other Postretirement Benefits Plan | Level 2 | International corporate bonds        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 1 $ 1 $ 1