| **Consolidated Statements Of Cash Flows (USD $)In Millions, unless otherwise specified**     | 12 Months Ended |
|----------------------------------------------------------------------------------------------|-----------------|
||
| **OPERATING ACTIVITIES**                                                                     |            |   |   |
| Net income (loss)                                                                            | $ 8             | $ 98 | $ 76 |
| **Adjustments to reconcile net income (loss) to net cash provided by operating activities:** |            |   |   |
| Depreciation, amortization and accretion                                                     | 227             | 264 | 216 |
| Stock-based compensation                                                                     | 150             | 164 | 170 |
| Acquisition-related contingent consideration                                                 | (35)            | (64) | 11 |
| Net (gains) losses on investments and disposal of property and equipment                     | 2               | (37) | (12) |
| Non-cash restructuring charges                                                               | 0               | 7 | (6) |
| **Change in assets and liabilities:**                                                        |            |   |   |
| Receivables, net                                                                             | (12)            | 56 | (14) |
| Inventories                                                                                  | (13)            | 16 | 21 |
| Other assets                                                                                 | (56)            | 15 | (101) |
| Accounts payable                                                                             | (18)            | (78) | (50) |
| Accrued and other liabilities                                                                | (3)             | (106) | 13 |
| Deferred income taxes, net                                                                   | 16              | (7) | (90) |
| Deferred net revenue (online-enabled games)                                                  | 446             | (4) | (43) |
| Net cash provided by operating activities                                                    | 712             | 324 | 277 |
| **INVESTING ACTIVITIES**                                                                     |            |   |   |
| Capital expenditures                                                                         | (97)            | (106) | (172) |
| Proceeds from sale of property and equipment                                                 | 0               | 0 | 26 |
| Proceeds from sale of marketable equity securities                                           | 0               | 72 | 0 |
| Proceeds from maturities and sales of short-term investments                                 | 401             | 459 | 526 |
| Purchase of short-term investments                                                           | (600)           | (414) | (468) |
| Acquisition-related restricted cash                                                          | 0               | 31 | 75 |
| Acquisition of subsidiaries, net of cash acquired                                            | (5)             | (10) | (676) |
| Net cash provided by (used in) investing activities                                          | (301)           | 32 | (689) |
| **FINANCING ACTIVITIES**                                                                     |            |   |   |
| Proceeds from issuance of common stock                                                       | 77              | 34 | 57 |
| Proceeds from borrowings on convertible senior notes, net of issuance costs                  | 0               | 0 | 617 |
| Proceeds from issuance of warrants                                                           | 0               | 0 | 65 |
| Purchase of convertible note hedge                                                           | 0               | 0 | (107) |
| Payments of debt issuance costs                                                              | 0               | (2) | 0 |
| Excess tax benefit from stock-based compensation                                             | 13              | 0 | 4 |
| Repurchase and retirement of common stock                                                    | 0               | (349) | (471) |
| Acquisition-related contingent consideration payment                                         | (1)             | (28) | (25) |
| Net cash provided by (used in) financing activities                                          | 89              | (345) | 140 |
| Effect of foreign exchange on cash and cash equivalents                                      | (10)            | (12) | (14) |
| Increase (decrease) in cash and cash equivalents                                             | 490             | (1) | (286) |
| Beginning cash and cash equivalents                                                          | 1,292           | 1,293 | 1,579 |
| Ending cash and cash equivalents                                                             | 1,782           | 1,292 | 1,293 |
| **Supplemental cash flow information:**                                                      |            |   |   |
| Cash paid (refunded) during the year for income taxes, net                                   | 29              | 26 | (4) |
| Cash paid during the year for interest                                                       | 6               | 5 | 2 |
| **Non-cash investing activities:**                                                           |            |   |   |
| Change in unrealized gains and losses on available-for-sale securities, net of taxes         | 0               | (46) | (40) |
| Equity issued in connection with acquisition                                                 | $ 0             | $ 0 | $ 87 |

| X                                                                                                                                                                                                                                                                                                                      |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount Paid For Convertible Note Hedge Recorded As Equity Transaction.
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Equity issued in connection with acquisition
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| - Definition
The net change during the reporting period in the carrying liability amount of packaged goods and digital content sales as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, but excluding interest income.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Payments of acquisition contingent consideration.
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| - Definition
This element represents the amount of realized gains and losses on investments, including other than temporary impairments, and the difference between the sale price or salvage price and the book value of property, plant, and equipment that were sold or retired during the reporting period.
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| - Definition
This element represents the change in unrealized gains (losses) on investments, net of tax.
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| - Definition
Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.
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| - Definition
The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method.
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| - Definition
The effect of exchange rate changes on cash balances in continuing operations held in foreign currencies.
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| - Definition
Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.
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| - Definition
The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.
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| - Definition
Change in recurring obligations of a business that arise from the acquisition of merchandise, materials, supplies and services used in the production and sale of goods and services.
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| - Definition
The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.
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| - Definition
The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.
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| - Definition
The increase (decrease) during the reporting period in the account that represents the temporary difference that results from Income or Loss that is recognized for accounting purposes but not for tax purposes and vice versa.
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| - Definition
The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.
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| - Definition
The increase (decrease) during the reporting period in other assets used in operating activities not separately disclosed in the statement of cash flows. May include changes in other current assets, other noncurrent assets, or a combination of other current and noncurrent assets.
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| - Definition
The net cash inflow or outflow for the increase (decrease) associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities.
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| - Definition
The amount of cash paid for interest during the period.
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| - Definition
Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
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| - Definition
Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
+ References
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| - Definition
Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
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| - Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash outflow to reacquire common stock during the period.
+ References
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| - Definition
The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash outflow for acquisition of or capital improvements of property, plant and equipment, used to produce goods or deliver services, and not otherwise defined in the taxonomy.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash outflow for securities or other assets acquired, which qualify for treatment as an investing activity and are to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.
+ References
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| - Definition
The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The total cash inflow associated with the amount received from holders to acquire the entity's shares under incentive and share awards, including stock option exercises. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash inflow associated with the sale of equity securities classified as available-for-sale securities.
+ References
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| - Definition
The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash inflow from sales of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.
+ References
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| - Definition
Amount of consideration other than cash used to fully or partially settle an accrued restructuring cost.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.
+ References
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