Retirement Plans International Pension Plan, Expected Benefit Payments (Details) - Foreign Plan [Member] $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of years annual benefit payments	10 years
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months	$ 42
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	43
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	47
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	49
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	53
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter	$ 320