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v3.20.4

Summary of Significant Accounting Policies (Details 4) - USD ($) $ / shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Period Within Date Of Corresponding Sales In Which Trade Receivables Are Classified As Accounts And Notes Receivable | 30 days |  |  |  |
Other Assets | $ 453 |  | $ 431 |  |
Accounts and notes receivable | 579 |  | 656 |  |
Allowance for doubtful accounts | (45) |  | (72) |  |
Accounts and notes receivable, net | 534 |  | 584 |  |
Net amounts included in Other Assets | 72 |  | 68 |  |
Allowance for doubtful accounts related to notes and direct financing lease receivables | 5 |  | 1 |  |
Stock Repurchased During Period, Value | $ (250) | [1] | $ (810) | [1] | $ (2,394)
Common Stock, No Par Value | $ 0 |  | $ 0 |  |
Prior Period Reclassification Adjustment | $ 0 |  |  |  |
Reduction to Retained earnings |  |  |  |  |
Stock Repurchased During Period, Value | (179) |  | $ (796) |  | (2,356)
Franchise and property expenses [Member] |  |  |  |  |
Sales Allowances, Services | 12 |  | 24 |  | $ 11
Franchise advertising and other services expenses [Member] [Member] |  |  |  |  |
Sales Allowances, Services | $ (7) |  | $ 19 |  |
Minimum [Member] |  |  |  |  |
Continuing Fees Rate | 4.00% |  |  |  |
Maximum [Member] |  |  |  |  |
Continuing Fees Rate | 6.00% |  |  |  |
Capitalized software costs | Minimum [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 3 years |  |  |  |
Capitalized software costs | Maximum [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 7 years |  |  |  |
[1] | 2019 amount excludes and 2018 amount includes the effect of $5 million in share repurchases (0.1 million shares) with trade dates on, or prior to, December 31, 2018, but settlement dates subsequent to December 31, 2018.

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