Lease Arrangements Lease Arrangements (Details - Lease Assets and Liabilities) $ in Millions	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease assets, net	$ 195
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssets
Operating lease liabilities	$ 235
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilities