Revenue Deferred Revenue and Deposits (Details) - USD ($) $ in Millions |
Sep. 30, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Revenue from Contract with Customer [Abstract] | ||
| Deferred revenue | $ 332 | $ 234 |
| Deposits | 47 | 35 |
| Total deferred revenue and deposits | $ 379 | $ 269 |
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- Definition Contract With Customer, Deposits, Unused Balances No definition available.
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- Definition Contract With Customer, Liability And Unused Deposits No definition available.
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| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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