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STOCKHOLDERS' EQUITY - Preferred Stock Narrative (Details) - USD ($) $ / shares in Units, $ in Millions |  | 9 Months Ended
--- | --- | ---
Oct. 28, 2019 | Sep. 30, 2019 | Sep. 30, 2018
Class of Stock [Line Items] |  |  |
Preferred stock issued |  | $ 293 | $ 296
Redemption price per share (usd per share) |  | $ 1,000 |
Redemption notice period |  | 90 days |
Subsequent Event | Series E Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Preferred stock issued | $ 450 |  |
Depositary shares issued (in shares) | 18,000,000 |  |
Depository share interest percentage | 2.50% |  |
Preferred stock, dividend rate | 5.00% |  |
Redemption price per share (usd per share) | $ 1,000 |  |
Liquidation preference per depository share (usd per share) | $ 25 |  |
Proceeds from issuance of stock | $ 437 |  |
Redemption notice period | 90 days |  |

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- Definition The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21488-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21564-112644 + Details
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