XML 69 R59.htm IDEA: XBRL DOCUMENT v3.23.3
Employee Incentive Plans (Narrative) (Details) - USD ($)
$ in Millions
 9 Months Ended 197 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Feb. 28, 2023
Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 10.00%        
Defined Contribution Plan, Employer Matching Contribution, Percent of Match 50.00%        
Defined Contribution Plan Vesting Period 6 years        
401(k) plan contribution expense $ 6 $ 5      
Maximum shares of stock distributable under 2007 Stock Incentive Plan 40,000,000   40,000,000 40,000,000 30,000,000
Shares granted to external directors     36,609    
2007 Stock Incentive Plan Compensation Expense $ 75 $ 64      
Estimated Future 2007 Stock Incentive Plan Compensation Expense $ 26   $ 26    
Post employment shares distribution     1,320,900    
Awards Granted On December 31, 2021 Onwards [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting rights, description The vesting and distribution of grants prior to December 31, 2021 remain in accordance with the following schedule: (a) 10% on the first vesting date, which is on or about May 9 of each year; and (b) an additional 15% on each of the following six anniversaries of the first vesting.        
Grants Prior To December 31, 2021 [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting rights, description For awards granted on December 31, 2021 onwards, restricted stock units vest and become distributable to participants 20% on each vesting date, which is on or about May 9 of each year        
External Director [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting rights, description 20%        
All Directors [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting rights, description (b) annual awards granted to all directors on December 31 of each year are fully vested and distributed immediately on grant date.        
2007 Stock Incentive Plan (Shares) | External Director [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period 5 years        
2007 Stock Incentive Plan (Shares) | External Director [Member] | Commencing One Year After Grant Date [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage per year 20.00%