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Leases (Tables)
3 Months Ended
Mar. 31, 2019
Leases [Abstract]  
Undiscounted annual future minimum lease payments
The undiscounted annual future minimum lease payments are summarized by year in the table below:

Maturity of Lease Liabilities
Operating Leases
(in millions)
2019
$
145

2020
173

2021
141

2022
118

2023
106

After 2023
302

Total lease payments
$
985

Less interest
143

Present value of lease liabilities (1)
$
842

(1) Present value of lease liabilities includes liabilities held for sale.