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Revenue Related to Contracts With Customers (Tables)
 12 Months Ended
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]  
Disaggregated revenue from contracts with customers by primary geographical markets
We disaggregate our revenue from contracts with customers by primary geographic markets.
Total Revenue
2019
2018
2017
U.S.
$
6,188

$
6,576

$
4,409

Non-U.S.
17,650

16,301

12,770

Total
$
23,838

$
22,877

$
17,179