Leases (Details 2) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating cash flows from operating leases	$ 29
Operating cash flows from finance leases	5
Finance cash flows from finance leases	25
Operating leases	83
Finance leases	$ 3
Operating leases, weighted-average remaining lease terms	9 years 5 months 1 day
Finance leases, weighted-average remaining lease terms	4 years 7 months 13 days
Operating leases, weighted-average discount rate	4.51%
Finance leases, weighted-average discount rate	10.45%
Operating lease assets, net of accumulated amortization of $23 million	$ 231
Finance lease assets, net of accumulated amortization of $90 million	73
Total leased assets	304
Operating liability, current	32
Finance liability, current	15
Operating liability, noncurrent	241
Finance liability, noncurrent	45
Total leased liabilities	333
Operating lease assets, accumulated amortization	23
Financing lease, accumulated amortization	$ 90