Segment Information Level 4 (Details) - Depreciation by Segment (Details) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018	Dec. 31, 2017
Depreciation by Segment [Line Items]
Depreciation and Amortization, including Accelerated Depreciation	$ 110	$ 52	$ 117	$ 129
accelerated depreciation			4	14
EPCD [Member]
Depreciation by Segment [Line Items]
Depreciation and Amortization, including Accelerated Depreciation	57	30	69	85
FPD [Member]
Depreciation by Segment [Line Items]
Depreciation and Amortization, including Accelerated Depreciation	51	20	44	40
Corporate and Other [Member]
Depreciation by Segment [Line Items]
Depreciation and Amortization, including Accelerated Depreciation	$ 2	$ 2	$ 4	$ 4