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Equity (Details) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jul. 28, 2016 | Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Reconciliation of the Beginning and Ending Balances of the Carrying Amounts of Equity |  |  |  |  |
Balance as of beginning of period |  |  |  | $ 21,354 | $ 21,244
Net income |  | $ 843 | $ 1,365 | 1,356 | 2,333
Dividends |  |  |  | (564) | (409)
Stock-based compensation expense |  |  |  | 23 | 18
Tax deduction in excess of stock-based compensation expense |  |  |  | 0 | 27
Transactions in connection with stock-based compensation plans: |  |  |  |  |
Stock issuances |  |  |  | 3 | 20
Contributions from noncontrolling interests |  |  |  | 0 | 2
Distributions to noncontrolling interests |  |  |  | (47) | (34)
Other comprehensive income (loss) |  | (200) | 201 | (68) | (162)
Balance as of end of period |  | 21,404 | 22,006 | 21,404 | 22,006
Dividend Declared [Member] | Subsequent Event [Member] |  |  |  |  |
Equity (Textual) |  |  |  |  |
Dividends payable, date declared | Jul. 28, 2016 |  |  |  |
Dividends payable, amount per share | $ 0.60 |  |  |  |
Dividends payable, date to be paid | Sep. 08, 2016 |  |  |  |
Dividends payable, date of record | Aug. 11, 2016 |  |  |  |
Stock-Based Compensation Plans Purchase Program [Member] |  |  |  |  |
Transactions in connection with stock-based compensation plans: |  |  |  |  |
Stock purchases |  |  |  | (43) | (105)
Common Stock Purchase Program [Member] |  |  |  |  |
Transactions in connection with stock-based compensation plans: |  |  |  |  |
Stock purchases |  |  |  | (610) | (928)
Parent [Member] |  |  |  |  |
Reconciliation of the Beginning and Ending Balances of the Carrying Amounts of Equity |  |  |  |  |
Balance as of beginning of period |  |  |  | 20,527 | 20,677
Net income |  |  |  | 1,309 | 2,315
Dividends |  |  |  | (564) | (409)
Stock-based compensation expense |  |  |  | 23 | 18
Tax deduction in excess of stock-based compensation expense |  |  |  | 0 | 27
Transactions in connection with stock-based compensation plans: |  |  |  |  |
Stock issuances |  |  |  | 3 | 20
Contributions from noncontrolling interests |  |  |  | 0 | 0
Distributions to noncontrolling interests |  |  |  | 0 | 0
Other comprehensive income (loss) |  |  |  | (69) | (162)
Balance as of end of period |  | 20,576 | 21,453 | 20,576 | 21,453
Parent [Member] | Stock-Based Compensation Plans Purchase Program [Member] |  |  |  |  |
Transactions in connection with stock-based compensation plans: |  |  |  |  |
Stock purchases |  |  |  | (43) | (105)
Parent [Member] | Common Stock Purchase Program [Member] |  |  |  |  |
Transactions in connection with stock-based compensation plans: |  |  |  |  |
Stock purchases |  |  |  | (610) | (928)
Noncontrolling Interest [Member] |  |  |  |  |
Reconciliation of the Beginning and Ending Balances of the Carrying Amounts of Equity |  |  |  |  |
Balance as of beginning of period |  |  |  | 827 | 567
Net income |  |  |  | 47 | 18
Transactions in connection with stock-based compensation plans: |  |  |  |  |
Contributions from noncontrolling interests |  |  |  | 0 | 2
Distributions to noncontrolling interests |  |  |  | (47) | (34)
Other comprehensive income (loss) |  |  |  | 1 | 0
Balance as of end of period |  | $ 828 | $ 553 | $ 828 | $ 553

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