Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 20
-Section 45
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324

Name:	us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Income Taxes (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended	9 Months Ended	12 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Jul. 01, 2019	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Investments, Owned, Federal Income Tax Note [Line Items]
Other Tax Expense (Benefit)	$ 50
Income tax (benefit) expense	$ 207	$ (4)	$ 6	$ 222	$ 17	$ 40
Disallowed interest expense carryforward						283
Global Intangible low tax income						$ 21
Effective Income Tax Rate Reconciliation, Percent	6.00%	8.00%	(50.00%)	7.00%	(46.00%)
Tax impact on reorganization adjustments	$ 40
Tax Benefit for Removal of Valuation Allowance	$ 10