Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Narrative (Details)

v3.19.1
Fair Value Measurements - Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Fair Value Disclosures [Abstract]    
Life insurance contracts and other private equity investments, which approximates fair value $ 539 $ 515