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Affiliate Transactions	12 Months Ended
Affiliate Transactions	Dec. 31, 2019
Related Party Transactions [Abstract]
Affiliate Transactions	Affiliate Transactions We provide to our affiliates telecommunications services that we also provide to external customers. Whenever possible, costs are directly assigned to our affiliates for the services they use. If costs cannot be directly assigned, they are allocated among all affiliates based upon cost causative measures; or if no cost causative measure is available, these costs are allocated based on a general allocator. These cost allocation methodologies are reasonable. From time to time, we adjust the basis for allocating the costs of a shared service among affiliates. Such changes in allocation methodologies are generally billed prospectively. We also purchase services from our affiliates including telecommunication services, insurance, flight services and other support services such as legal, regulatory, finance and accounting, tax, human resources and executive support. Subsequent Event As of the date of this report, $225 million of distributions were made to our parent in the first quarter of 2020.