Leases (Tables)

6 Months Ended

Jun. 30, 2020

Leases [Abstract]

Components of Lease Expense

Lease costs and related information were as follows:

	Three Months Ended June 30						Six Months Ended June 30
($ in millions)	2020			2019			2020			2019
Operating lease costs	$	13		$	12		$	29		$	23
Short-term operating lease costs	$	9		$	7		$	13		$	12
Variable operating lease costs	$	1		$	2		$	2		$	3
Operating cash flows from operating leases	$	(12)		$	(11)		$	(28)		$	(22)
Right-of-use assets obtained in exchange for new operating lease liabilities	$	4		$	4		$	21		$	17
Weighted-average remaining lease term (years) - operating leases	10 years			11 years			10 years			11 years
Weighted-average discount rate - operating leases	4.1		%	4.5		%	4.1		%	4.5		%

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

The undiscounted future non-cancellable lease payments under our operating leases were as follows:

Year:	June 30, 2020		December 31, 2019
2020	$	24	$	45
2021	41		38
2022	30		30
2023	25		24
2024	22		22
Thereafter	119		114
Total lease payments	261		273
Less: imputed interest	57		58
Present value of lease liabilities	$	204	$	215

Reconciliation of Operating Lease Liability Recognized in Statement of Financial Position [Table Text Block]

Lease liabilities included in the Company's consolidated balance sheet as of June 30, 2020, were as follows:

($ in millions)	June 30, 2020		December 31, 2019
Short-term operating lease liabilities	$	29	$	35
Lease liabilities included in liabilities held for sale	28		16
Long-term operating lease liabilities	147		164
Total operating lease liabilities	$	204	$	215