Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2019

Accounting Policies [Abstract]

Schedule of adjustments made due to new ASU

				(unaudited)		(unaudited)
Balance Sheet (Dollars in millions)	Balance at December 31, 2018			Adjustments due to ASU 2016-02		Balance at January 1, 2019
Assets
Right-of-use assets, operating leases	$	—		$	75	$	75
Current liabilities
Other current liabilities	—			16		16
Non-current liabilities
Operating lease non-current liabilities	—			57		57
Equity
Accumulated deficit	(181		)	—		(181		)