Pension and Postretirement Expense Level 4 (Details) - Non-U.S. Pension Plan Investments Measured at Fair Value - Foreign Plan [Member] - Pension Plan [Member] - USD ($) $ in Millions	Dec. 31, 2019	Jul. 01, 2019	Dec. 31, 2018	Dec. 31, 2017
Pooled Insurance Products with Fixed Income Guarantee	$ 13		$ 12
Cash, Money Market and Other	1		0
Pension Benefits Fair Value of Plan Assets of Underfunded Plans	13	$ 13	12
Fair value of plan assets at end of year subtotal	14		12
Other international equity funds	108		77
Other fixed income securities	361		315
Defined Benefit Plan, Plan Assets, Amount	483	$ 470	404	$ 412
Fair Value, Inputs, Level 1 [Member]
Pooled Insurance Products with Fixed Income Guarantee	0		0
Cash, Money Market and Other	0		0
Defined Benefit Plan, Plan Assets, Amount	0		0
Fair Value, Inputs, Level 2 [Member]
Pooled Insurance Products with Fixed Income Guarantee	13		12
Cash, Money Market and Other	1		0
Defined Benefit Plan, Plan Assets, Amount	14		12
Fair Value, Inputs, Level 3 [Member]
Pooled Insurance Products with Fixed Income Guarantee	0		0
Cash, Money Market and Other	0		0
Defined Benefit Plan, Plan Assets, Amount	$ 0		$ 0