Revenue Recognition - Narratives (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
Dec. 31, 2017 |
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| Revenue from Contract with Customer [Abstract] | |||||
| Provisions for doubtful receivables | $ 29,000,000 | $ 24,000,000 | $ 41,000,000 | $ 63,000,000 | |
| Contract assets | 248,000,000 | 248,000,000 | $ 170,000,000 | ||
| Deferred revenue | 231,000,000 | 231,000,000 | 174,000,000 | ||
| Contract liability, current | 8,000,000 | 8,000,000 | 31,000,000 | ||
| Contract liability, noncurrent | $ 26,000,000 | $ 26,000,000 | $ 0 | ||
| X | ||||||||||
- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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