Commitments and Contigencies (Tables)

12 Months Ended

Dec. 31, 2018

Table Text Block [Abstract]

Minimum aggregate rental commitment under noncancelable operating leases

As of December 31, 2018, the minimum aggregate rental commitment under all non-cancelable operating leases (net of subleases of $14 million) was as follows:

(Millions)
2019	$	140
2020		118
2021		95
2022		78
2023		65
Thereafter		832
Total	$	1,328