Income Taxes (Details 3) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2019
Operating and capital loss carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount	$ 20
Amount of operating and capital loss carryforwards due to expire in 2016		$ 12
Amount of operating and capital loss carryforwards due to expire between 2017 and 2020		173
Amount of operating and capital loss carryforwards due to expire between 2021 and 2035		1,235
Amount of operating and capital loss carryforwards which may be carried forward indefinitely		336
Total Operating and Capital Loss Carryforwards		1,756
Foreign [Member]
Operating and capital loss carryforwards [Line Items]
Amount of operating and capital loss carryforwards due to expire in 2016		10
Amount of operating and capital loss carryforwards due to expire between 2017 and 2020		26
Amount of operating and capital loss carryforwards due to expire between 2021 and 2035		36
Amount of operating and capital loss carryforwards which may be carried forward indefinitely		336
Total Operating and Capital Loss Carryforwards		408
State and Local Jurisdiction [Member]
Operating and capital loss carryforwards [Line Items]
Amount of operating and capital loss carryforwards due to expire in 2016		2
Amount of operating and capital loss carryforwards due to expire between 2017 and 2020		111
Amount of operating and capital loss carryforwards due to expire between 2021 and 2035		1,021
Amount of operating and capital loss carryforwards which may be carried forward indefinitely		0
Total Operating and Capital Loss Carryforwards		1,134
Internal Revenue Service (IRS) [Member]
Operating and capital loss carryforwards [Line Items]
Amount of operating and capital loss carryforwards due to expire in 2016		0
Amount of operating and capital loss carryforwards due to expire between 2017 and 2020		36
Amount of operating and capital loss carryforwards due to expire between 2021 and 2035		178
Amount of operating and capital loss carryforwards which may be carried forward indefinitely		0
Total Operating and Capital Loss Carryforwards		$ 214

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(1))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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