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Commitments (Tables)
9 Months Ended
Sep. 30, 2020
Commitments  
Changes in warranty liabilities

Standard Warranty Liability

(Dollars in millions)

    

2020

    

2019

Balance at January 1

$

113

$

118

Current period accruals

 

56

 

66

Accrual adjustments to reflect actual experience

 

(15)

 

(1)

Charges incurred

 

(73)

 

(86)

Balance at September 30

$

80

$

98

Extended Warranty Liability

(Dollars in millions)

    

2020

    

2019

Balance at January 1

$

477

$

533

Revenue deferred for new extended warranty contracts

 

115

 

124

Amortization of deferred revenue

 

(169)

 

(194)

Other*

 

(3)

 

(8)

Balance at September 30

$

419

$

455

Current portion

$

196

$

226

Noncurrent portion

$

223

$

230

* Other primarily consists of foreign currency translation adjustments.