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Leases (Tables)
6 Months Ended
Jun. 30, 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
$
99

2020
179

2021
148

2022
124

2023
112

After 2023
331

Total lease payments
$
993

Less: interest
144

Present value of lease liabilities (1)
$
849

(1) Present value of lease liabilities includes liabilities held for sale of $36 million.