Leases Lease Expense (Tables)

3 Months Ended

Mar. 31, 2019

Leases Expense [Abstract]

Lease, Cost [Table Text Block]

(In millions)	Three Months Ended March 31, 2019
Operating lease costs	$	12
Variable lease costs	13
Total lease cost	$	25

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

(In millions)	Three Months Ended March 31, 2019
Cash paid for amounts in the measurement of lease liabilities:
Operating cash disbursements from operating leases	$	10

Finance Lease, Liability, Maturity [Table Text Block]

(In millions)
2019 1	$	41
2020	45
2021	39
2022	35
2023	31
Thereafter	114
Total	$	305

¹Contractual maturities for the nine months remaining in 2019.