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v3.19.3.a.u2

Share-based Compensation and Employee Benefits - Schedule of One-Percentage Point Change in Assumed Health Care Cost Trends (Details) - OPEB - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
One-percentage point increase: |  |
Aggregate of service cost and interest cost | $ 1 | $ 1
Accumulated postretirement benefit obligation | 14 | 16
One-percentage point decrease: |  |
Aggregate of service cost and interest cost | 0 | (1)
Accumulated postretirement benefit obligation | $ (12) | $ (14)

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- Definition Amount of decrease in accumulated postretirement benefit obligation from one-percentage-point decrease in assumed health care cost trend rate. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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