X0306 4 2018-11-05 false 0001489393 LyondellBasell Industries N.V. LYB 0001641335 Roudeix Richard 4TH FLOOR ONE VINE STREET LONDON X0 W1J 0AH UNITED KINGDOM false true false false SVP, O&P - EAI Class A Ordinary Shares 2018-11-05 4 M false 199.00 44.00 A 6934.751 D Class A Ordinary Shares 2018-11-05 4 M false 820.00 44.00 A 7754.751 D Class A Ordinary Shares 2018-11-05 4 F false 545.00 93.10 D 7209.751 D Stock Options (Right to Buy) 44.00 2018-11-05 4 M false 199.00 0.00 D 2022-02-28 Class A Ordinary Shares 199.00 820.00 D Stock Options (Right to Buy) 44.00 2018-11-05 4 M false 820.00 0.00 D 2022-02-28 Class A Ordinary Shares 820.00 0.00 D Includes 2,575 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 615 granted on February 16, 2016 that vest on February 16, 2019; 926 granted on February 16, 2017 that vest on February 16, 2020 and 1,034 granted on February 21, 2018 that vest on February 21, 2021. Granted pursuant to the issuer's long-term incentive plan. Award vested as follows: 341 vested on February 28, 2013, 339 vested on February 28, 2014 and 339 vested on February 28, 2015. /s/ Lara A. Mason, Attorney-in-Fact 2018-11-07