Contingencies and Commitments (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of minimum rental payments for operating leases

 Future minimum rental payments for operating leases having non-cancellable terms in excess of one year are as follows (in millions).

2019	2020	2021	2022		2023		After     2023	Total
$1,360	$1,317	$1,098		$872		$708	$3,658	$9,013