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Fair Value of Assets and Liabilities (Tables)
 9 Months Ended
Sep. 30, 2020
Fair Value Disclosures [Abstract]  
Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis Assets and liabilities recorded at fair value on a recurring basis as of September 30, 2020 and December 31, 2019 are set forth as follows:
  
September 30, 2020
In millionsTotalQuoted Prices in
Active Markets for
Identical Assets
(Level 1)		Significant Other
Observable Inputs
(Level 2)		Significant
Unobservable Inputs
(Level 3)
Assets:
Deposits held in money market mutual funds (1)
$1,382 $1,382 $— $— 
Foreign investments(2)
2 — 2 — 
Foreign exchange contracts (2)
1 — 1 — 
Total$1,385 $1,382 $3 $— 
Liabilities:
Foreign exchange contracts (3)
$4 $— $4 $— 
Total$4 $— $4 $— 

December 31, 2019
In millionsTotalQuoted Prices in
Active Markets for
Identical Assets
(Level 1)		Significant Other
Observable Inputs
(Level 2)		Significant
Unobservable Inputs
(Level 3)
Assets:
Deposits held in money market mutual funds (1)
$15 $15 $— $— 
Foreign exchange contracts (2)
2 — 2 — 
Total$17 $15 $2 $— 
Liabilities:
Foreign exchange contracts (3)
$1 $— $1 $— 
Total$1 $— $1 $— 

(1)    Included in Cash and cash equivalents in the Condensed Consolidated Balance Sheets.
(2)    Included in Other current assets in the Condensed Consolidated Balance Sheets.
(3)    Included in Other current liabilities in the Condensed Consolidated Balance Sheets.