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Warranty Obligations (Tables)
 6 Months Ended
Jun. 30, 2018
Product Warranties Disclosures [Abstract]  
Schedule of Product Warranty Liability
The table below summarizes the activity in the product warranty liability for the six months ended June 30, 2018:
 
Warranty Obligations
 
 
 
(in millions)
Accrual balance at beginning of period
$
97

Provision for estimated warranties incurred during the period
17

Changes in estimate for pre-existing warranties
6

Settlements made during the period (in cash or in kind)
(22
)
Foreign currency translation and other
(3
)
Accrual balance at end of period
$
95