Restructuring Expense (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
Dec. 31, 2016 |
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| Restructuring Cost and Reserve [Line Items] | |||||
| Restructuring expense | $ 0 | $ 26 | $ 6 | $ 49 | |
| Share-based compensation | $ 22 | 40 | 81 | 98 | |
| Accrued restructuring expense | $ 6 | ||||
| Restructuring expense [Member] | |||||
| Restructuring Cost and Reserve [Line Items] | |||||
| Share-based compensation | $ 21 | $ 3 | $ 43 | ||
| X | ||||||||||
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of capitalized and expensed compensation cost from equity-based compensation arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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