Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Purchase Obligations

Future minimum payments required under these commitments as of December 31, 2019 are as follows:

	Purchase Obligations
(Dollars in millions)
2020	$	924
2021	436
2022	748
2023	61
2024	39
Thereafter	36
Total	$	2,244