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Acquisitions and Divestitures (Tables) - Alpha Holding Company, LLC
12 Months Ended
Dec. 31, 2019
Business Acquisition [Line Items]  
Schedule of assets acquired and liabilities assumed
The following table reflects the fair value determination (in millions):

Identifiable assets acquired and liabilities assumed:Estimated Useful Lives (Years)Recognized amount
Property and equipment
3 - 70
$299  
Intangible assets
20
646  
GoodwillN/A269  
Other assets and liabilities, net (including $4 million of cash acquired)
N/A 
$1,215  
Schedule of amortization expense Amortization expense was approximately $34 million, $25 million and $10 million during the years ended December 31, 2019, 2018 and 2017, respectively, and the future amortization expense through 2022 is estimated as follows (in millions):
2020$42  
2021$48  
2022$54