Other Financial Data - Schedule of Other Current Assets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Other Financial Data [Abstract]
Costs to fulfill contracts with customers	$ 335	$ 329
Taxes receivable	88	113
Prepaid expenses	97	97
Receivables from the Divested Business	4	12
Other	78	67
Total	$ 602	$ 618

Other Financial Data [Abstract]

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Other Tax Assets, Current

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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, classified as current.

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Amount classified as accounts, notes and loans receivable attributable to disposal group held for sale or disposed of.

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Amount of current assets classified as other.

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