Retirement Plans and Post Retirement Benefits Pension Costs, Assumptions Used in Net Periodic Costs and Expected Contributions and Payments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment		$ (1)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 3	3	$ 5
Interest cost	12	11	13
Expected return on plan assets	(14)	(14)	(13)
Amortization of prior service cost	1	1	1
Amortization of net actuarial loss	5	6	6
Net periodic pension cost before settlement	6	7	11
Loss due to settlement	0	0	3
Net periodic pension cost	6	7	14
Net periodic pension cost included in cost of sales	2	2	4
Net periodic pension cost included in selling, general, and administrative expenses	1	1	1
Net periodic pension cost included in other non-operating items	$ 3	$ 4	$ 9
Defined Benefit, Canadian Plans [Member]
Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	3.80%	3.30%	3.70%
Expected return on plan assets	3.40%	4.10%	3.80%
Rate of compensation increase	3.50%	3.50%	3.50%
Defined Benefit, SERP [Member]
Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate		4.00%	2.70%
Rate of compensation increase			3.00%
Defined Benefit, US Plans [Member]
Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	4.20%	3.50%	4.00%
Expected return on plan assets	5.80%	5.80%	5.80%