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Other Financial Data (Tables) | 9 Months Ended
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Sep. 30, 2019
Other Financial Data [Abstract] |
Schedule of Other Income (Expense) | Other income (expense) consists of the following (in millions):
| Three Months Ended September 30 |  | Nine Months Ended September 30
| 2019 |  | 2018 |  | 2019 |  | 2018
Foreign currency remeasurement | $ | 17 |  |  | $ | 3 |  |  | $ | 17 |  |  | $ | 16 |
Disposal of businesses | 1 |  |  | (3 | ) |  | 8 |  |  | (4 | )
Pension and other postretirement | 3 |  |  | — |  |  | 12 |  |  | (5 | )
Equity earnings | 1 |  |  | 1 |  |  | 3 |  |  | 3 |
Financial instruments | (20 | ) |  | — |  |  | (32 | ) |  | (27 | )
Total | $ | 2 |  |  | $ | 1 |  |  | $ | 8 |  |  | $ | (17 | )
Schedule of Allowance for Doubtful Accounts | An analysis of the allowance for doubtful accounts are as follows (in millions):
| Three Months Ended September 30 |  | Nine Months Ended September 30
| 2019 |  | 2018 |  | 2019 |  | 2018
Balance at beginning of period | $ | 65 |  |  | $ | 62 |  |  | $ | 64 |  |  | $ | 59 |
Provision charged to Other general expense | 7 |  |  | 9 |  |  | 19 |  |  | 21 |
Accounts written off, net of recoveries | (6 | ) |  | (8 | ) |  | (17 | ) |  | (17 | )
Foreign currency translation and other | 1 |  |  | 3 |  |  | 1 |  |  | 3 |
Balance at end of period | $ | 67 |  |  | $ | 66 |  |  | $ | 67 |  |  | $ | 66 |
Schedule of Other Current Assets | The components of Other current assets are as follows (in millions):
As of | September 30, 2019 |  | December 31, 2018
Costs to fulfill contracts with customers (1) | $ | 239 |  |  | $ | 329 |
Prepaid expenses | 123 |  |  | 97 |
Taxes receivable | 177 |  |  | 113 |
Other (2) | 92 |  |  | 79 |
Total | $ | 631 |  |  | $ | 618 |
(1) | Refer to Note 3 “Revenue from Contracts with Customers” for further information.
(2) December 31, 2018 includes $12 million previously classified as “Receivables from the Divested Business
Schedule of Other Non-current Assets | The components of Other non-current assets are as follows (in millions):
As of | September 30, 2019 |  | December 31, 2018
Costs to obtain contracts with customers (1) | $ | 163 |  |  | $ | 156 |
Taxes receivable | 100 |  |  | 100 |
Leases (2) | 106 |  |  | — |
Investments | 52 |  |  | 54 |
Other | 141 |  |  | 138 |
Total | $ | 562 |  |  | $ | 448 |
(1) | Refer to Note 3 “Revenue from Contracts with Customers” for further information.
(2) Refer to Note 20 “Lease Commitments” for further information.
Schedule of Other Current Liabilities | The components of Other current liabilities are as follows (in millions):
As of | September 30, 2019 |  | December 31, 2018
Deferred revenue (1) | $ | 256 |  |  | $ | 251 |
Leases (2) | 218 |  |  | — |
Taxes payable | 152 |  |  | 83 |
Other | 537 |  |  | 602 |
Total | $ | 1,163 |  |  | $ | 936 |
(1) | During the three and nine months ended September 30, 2019, $144 million and $385 million, respectively, was recognized in the Condensed Consolidated Statements of Income. During the three and nine months ended September 30, 2018, $133 million and $348 million, respectively, was recognized in the Condensed Consolidated Statements of Income.
(2) | Refer to Note 20 “Lease Commitments” for further information.
Schedule of Other Non-current Liabilities | The components of Other non-current liabilities are as follows (in millions):
As of | September 30, 2019 |  | December 31, 2018
Taxes payable (1) | $ | 578 |  |  | $ | 585 |
Leases | 82 |  |  | 169 |
Deferred revenue | 59 |  |  | 65 |
Compensation and benefits | 48 |  |  | 56 |
Other | 186 |  |  | 222 |
Total | $ | 953 |  |  | $ | 1,097 |
(1) Includes $218 million and $240 million for the non-current portion of the one-time mandatory transition tax on accumulated foreign earnings as of September 30, 2019 and December 31, 2018, respectively.

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