Stockholders’ Equity - Summary of Stock Repurchase Activity (Details) $ / shares in Units, $ in Millions |
9 Months Ended |
|---|---|
|
Sep. 30, 2018
USD ($)
$ / shares
shares
| |
| Equity [Abstract] | |
| Shares Repurchased | shares | 79,000,000 |
| Average Price per Share (in usd per share) | $ / shares | $ 37.82 |
| Value of Shares Repurchased | $ 3,000 |
| Shares Repurchased, Remaining Amount Authorized | |
| Beginning balance | 1,651 |
| Repurchase of shares of common stock | (3,000) |
| Ending balance | $ 4,651 |
| Treasury shares retired | shares | 0 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount remaining of a stock repurchase plan authorized. No definition available.
|
| X | ||||||||||
- Definition Total cost of shares repurchased divided by the total number of shares repurchased. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of shares of common and preferred stock retired from treasury during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|