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Condensed Consolidated Statements Of Cash Flows (Unaudited) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Operating Activities    
Net income $ 3,465 $ 3,139
Adjustments to reconcile net income to cash provided by operating activities:    
Depreciation 1,114 1,099
Deferred and other income taxes 93 128
Other operating activities, net (52) (128)
Changes in current assets and liabilities:    
Accounts receivable, net (330) (161)
Materials and supplies (169) (50)
Other current assets (39) (3)
Accounts payable and other current liabilities 203 73
Income and other taxes (118) 122
Cash provided by operating activities 4,167 4,219
Investing Activities    
Capital investments (1,645) (1,190)
Proceeds from asset sales 120 101
Maturities of short-term investments (Note 13) 0 48
Purchases of short-term investments (Note 13) 0 (24)
Other investing activities, net (15) (6)
Cash used in investing activities (1,540) (1,071)
Financing Activities    
Debt issued (Note 14) 4,090 2,896
Share repurchase programs (Note 16) (3,473) (4,085)
Debt repaid (1,664) (691)
Dividends paid (1,556) (1,350)
Net issued/(paid) commercial paper (Note 14) (151) 125
Debt exchange 0 (268)
Other financing activities, net (42) (34)
Cash used in financing activities (2,796) (3,807)
Net Change in Cash, Cash Equivalents, and Restricted Cash (169) (659)
Cash, cash equivalents, and restricted cash at beginning of year 983 1,818
Cash, cash equivalents, and restricted cash at end of period 814 1,159
Non-cash investing and financing activities:    
Capital investments accrued but not yet paid 241 104
Common shares repurchased but not yet paid 2 32
Cash (paid for)/received from:    
Income taxes, net of refunds (1,033) (712)
Interest, net of amounts capitalized (565) (535)
Cash and cash equivalents 788 1,115
Total cash, cash equivalents and restricted cash equivalents per above 814 1,159
Other Current Assets [Member]    
Cash (paid for)/received from:    
Restricted cash equivalents 22 32
Other Noncurrent Assets [Member]    
Cash (paid for)/received from:    
Restricted cash equivalents 4 12
Accelerated Share Repurchase Agreement [Member]    
Financing Activities    
Share repurchase programs (Note 16) $ 0 $ (400)