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Significant Financing Transactions (Schedule of Equity Units) (Details) - USD ($) shares in Millions, $ in Millions | Jun. 14, 2019 | Jun. 30, 2019
--- | --- | ---
Capital Unit [Line Items] |  |  |
Total Preferred Stock | [1] |  | $ 1,596
2019 Corporate Units |  |  |
Capital Unit [Line Items] |  |  |
Units Issued |  | 16 |
Total Net Proceeds | [2] | $ 1,582 |
Total Preferred Stock |  | $ 1,610 |
Cumulative Dividend Rate |  | 1.75% |
Stock Purchase Contract Annual Rate |  | 5.50% |
Stock Purchase Contract Liability |  | $ 250 |
Stock Purchase Contract Settlement Date |  | Jun. 01, 2022 |
[1] | 20 million shares authorized; 2 million shares outstanding at June 30, 2019.
[2] | Issuance costs of $28 million were recorded as a reduction to preferred stock ($14 million) and common stock ($14 million) in the Consolidated Balance Sheets.

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