Leases Leases (Policies)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Short-term Leases [Policy Text Block]	Leases with an initial term of 12 months or less are generally not recorded on the balance sheet, unless the arrangement includes an option to purchase the underlying asset, or an option to renew the arrangement, that we are reasonably certain to exercise (short-term leases).
Separation of Lease and Nonlease Components [Policy Text Block]	For leases executed in 2019 and later, we account for the lease components and the non-lease components as a single lease component, with the exception of our warehouse leases.