| **Stockholders' Deficit (Details) (USD $)In Millions, except Share data, unless otherwise specified** | 1 Months Ended | 3 Months Ended | 9 Months Ended | 1 Months Ended |        | 1 Months Ended |           | 1 Months Ended | 3 Months Ended |        | 3 Months Ended |        |
|-------------------------------------------------------------------------------------------------------|----------------|----------------|----------------|----------------|--------|----------------|-----------|----------------|----------------|--------|----------------|--------|
||
| **Class of Stock [Line Items]**                                                                       |           |           |           |           |   |           |      |           |           |   |           |   |   |   |   |   |   |   |   |   |   |
| Common stock, dividends, declared per share                                                           | 1              |           |           |           |   |           |      |           |           |   |           |   |   |   |   |   |   |   |   |   |   |
| Ownership Percentage Stockholder Rights Plan                                                          |           |           |           | 20.00%         |   |           |      |           |           |   |           |   |   |   |   |   |   |   |   |   |   |
| Number of securities called by each right                                                             |           |           |           |           |   |           |      |           |           |   |           |   |   |   |   |   |   | 0.001 |   |   | 1 |
| Exercise Price of Stockholder Rights Plan                                                             |           |           |           |           |   |           |      |           |           |   |           |   |   |   |   |   |   | 140 |   |   |   |
| Redeemable amount per right under Shareholder Rights Plan                                             |           |           |           | 0.001          |   |           |      |           |           |   |           |   |   |   |   |   |   |   |   |   |   |
| Stock Issued During Period, Shares, New Issues                                                        |           |           |           |           |   |           |      |           |           |   |           |   |   |   |   |   |   |   | 763,534 | 10,666,666 |   |
| Share Price                                                                                           |           |           |           |           |   |           |      |           |           |   |           |   |   |   |   |   |   |   | $ 18.75 | $ 18.75 |   |
| Proceeds from Issuance of Common Stock                                                                |           | $ 14           | $ 192          | $ 14           | $ 0    |           |      |           |           |   |           |   |   |   |   |   |   |   |   |   |   |
| Stock Repurchase Program, Authorized Amount                                                           |           |           |           |           |   | 175            |      | 100            |           |   |           |   |   |   | 75 |   |   |   |   |   |   |
| Treasury Stock, Shares, Acquired                                                                      |           |           |           |           |   |           | 2,542,609 |           |           |   | 2,380,952      |   |   | 1,905,600 |   |   |   |   |   |   |   |
| Payments for Repurchase of Common Stock                                                               |           |           |           | 0              | 75     |           |      |           |           |   |           |   |   |   |   | 5 | 70 |   |   |   |   |
| Accelerated Share Repurchases, Settlement Payment or Receipt                                          |           |           |           |           |   |           |      |           |           | 80     |           | 20     |   |   |   |   |   |   |   |   |   |
| Accelerated Share Repurchases, Initial Price Paid Per Share                                           |           |           |           |           |   |           |      |           | $ 33.60        |   |           |   |   |   |   |   |   |   |   |   |   |
| Stock Repurchase Program, Remaining Authorized Repurchase Amount                                      |           |           |           |           |   |           |      | $ 20           |           |   |           |   |   |   |   |   |   |   |   |   |   |
| Treasury Stock, Additional Shares Acquired                                                            |           |           |           |           |   |           |      |           |           |   |           |   | 161,657 |   |   |   |   |   |   |   |   |

| X                                                                                                                                                                                                                                                                                                                               |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right
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| X                                                                                                                                                                                                                                                                                                       |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Class of Warrant or Right, Redemption Price of Warrants or Rights
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| X                                                                                                                                                                                                                                                                |
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| - Definition
Common Stock, Dividends, Declared Per Share
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| - Definition
Ownership Percentage Stockholder Rights Plan
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| X                                                                                                                                                                                                                                                               |
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Treasury Stock, Additional Shares Acquired
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The price paid per share to immediately purchase the targeted number of shares on the date of executing the accelerated share repurchase agreement.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of cash payment to or cash receipt from the bank; or the stock issuance to or stock received from the bank in the settlement of the accelerated share repurchase agreement.
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The exercise price of each class of warrants or rights outstanding.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash outflow to reacquire common stock during the period.
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash inflow from the additional capital contribution to the entity.
+ References
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| - Definition
Price of a single share of a number of saleable stocks of a company.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of new stock issued during the period.
+ References
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| X                                                                                                                                                                                                                                                                                                                          |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount authorized by an entity's Board of Directors under a stock repurchase plan.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The remaining repurchase amount authorized by an entity's Board of Directors under a stock repurchase plan.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of shares that have been repurchased during the period and are being held in treasury.
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