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Changes in Equity
 6 Months Ended
Jun. 30, 2023
Stockholders' Equity Note [Abstract]  
Changes in Equity
Note 7—Changes in Equity
Millions of Dollars
Common Stock
Par
Value
Capital in
Excess of
Par
Treasury
Stock
Accum. Other
Comprehensive
Income (Loss)
Retained
Earnings
Total
For the three months ended June 30, 2023
Balances at March 31, 2023$21 61,100 (61,904)(6,027)54,593 47,783 
Net income2,232 2,232 
Other comprehensive income102 102 
Dividends declared
Ordinary ($0.51 per common share)
(620)(620)
Variable return of cash ($0.60 per common share)
(723)(723)
Repurchase of company common stock(1,300)(1,300)
Excise tax on share repurchases(13)(13)
Distributed under benefit plans69 69 
Other1 1 
Balances at June 30, 2023$21 61,169 (63,217)(5,925)55,483 47,531 
For the six months ended June 30, 2023
Balances at December 31, 2022
$21 61,142 (60,189)(6,000)53,029 48,003 
Net income
5,152 5,152 
Other comprehensive income
75 75 
Dividends declared
Ordinary ($1.02 per common share)
(1,245)(1,245)
Variable return of cash ($1.20 per common share)
(1,454)(1,454)
Repurchase of company common stock
(3,000)(3,000)
Excise tax on share repurchases(28)(28)
Distributed under benefit plans
27 27 
Other
1 1 
Balances at June 30, 2023
$21 61,169 (63,217)(5,925)55,483 47,531 
Millions of Dollars
Common Stock
Par
Value
Capital in
Excess of
Par
Treasury
Stock
Accum. Other
Comprehensive
Income (Loss)
Retained
Earnings
Total
For the three months ended June 30, 2022
Balances at March 31, 2022$21 60,907 (52,344)(4,808)45,442 49,218 
Net income5,145 5,145 
Other comprehensive loss(505)(505)
Dividends declared
Ordinary ($0.46 per common share)
(598)(598)
Variable return of cash ($0.70 per common share)
(896)(896)
Repurchase of company common stock(2,300)(2,300)
Distributed under benefit plans
138 138 
Other— — — 
Balances at June 30, 2022
$21 61,045 (54,644)(5,313)49,093 50,202 
For the six months ended June 30, 2022
Balances at December 31, 2021
$21 60,581 (50,920)(4,950)40,674 45,406 
Net income
10,904 10,904 
Other comprehensive loss
(363)(363)
Dividends declared
Ordinary ($0.92 per common share)
(1,201)(1,201)
Variable return of cash ($1.00 per common share)
(1,286)(1,286)
Repurchase of company common stock
(3,725)(3,725)
Distributed under benefit plans
464 464 
Other
1 2 3 
Balances at June 30, 2022
$21 61,045 (54,644)(5,313)49,093 50,202