Revenue from Contracts with Customers (Tables)

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table disaggregates the Company's revenue by segment:

	Three months ended
Dollars in millions	March 31, 2019		March 31, 2018
North America	$	497	$	480
Europe	358		369
APAC & Emerging Markets	86		98
Total	$	941	$	947