XML 57 R35.htm IDEA: XBRL DOCUMENT v3.21.1
Financial Instruments and Fair Value Measurements - Schedule of Aggregate Principal and Fair Value Amount of Outstanding 2025 Senior Notes and 2026 Senior Notes (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Carrying value amount $ 831 $ 491
Level 2 | 2025 Senior Notes    
Debt Instrument [Line Items]    
Aggregate principal amount 500 500
Carrying value amount [1] 492 491
Fair value amount [2] 541 $ 542
Level 2 | 2026 Senior Notes    
Debt Instrument [Line Items]    
Aggregate principal amount 345  
Carrying value amount [3] 339  
Fair value amount [2] $ 364  
[1] Net of $8 million and $9 million of unamortized debt issuance costs as of March 31, 2021 and December 31, 2020, respectively.
[2]

We estimate the fair value of our outstanding 2025 Senior Notes and 2026 Senior Notes based on recently reported market transactions and/or prices for identical or similar financial instruments obtained from a third-party pricing source.

[3]

Net of $6 million in unamortized debt issuance costs.