3.26.1 html 28 35 1 false 12 0 false 2 false false R1.htm 995100 - Document - Cover Sheet http://xbrl.sec.gov/dei/role/document/Cover Cover Cover 1 false false R2.htm 995410 - Disclosure - Pay vs Performance Disclosure Sheet http://xbrl.sec.gov/ecd/role/PvpDisclosure Pay vs Performance Disclosure Notes 2 false false R3.htm 995443 - Disclosure - Award Timing Disclosure Sheet http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure Award Timing Disclosure Notes 3 false false R4.htm 995447 - Disclosure - Insider Trading Policies and Procedures Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc Insider Trading Policies and Procedures Notes 4 false false All Reports Book All Reports tm261369-1_def14a.htm wm-20251231.xsd wm-20251231_def.xml wm-20251231_lab.xml wm-20251231_pre.xml bc_actualperformance-pn.jpg bc_peercompany-pn.jpg bc_relationshipnet-pn.jpg bc_relationshippeer-pn.jpg box_forboard-pn.jpg bx_executive-pn.jpg bx_public-pn.jpg bx_votefor-pn.jpg ic_bullet-bw.gif ic_bullet-bw.jpg ic_chair-pn.jpg ic_computer-pn.gif ic_digital-ko.gif ic_executiveleader-ko.gif ic_financialexpertise-ko.gif ic_humancapital-ko.gif ic_mail-pn.gif ic_member-pn.jpg ic_mobile-pn.gif ic_operational-ko.gif ic_publiccompany-ko.gif ic_risk-ko.gif ic_star-pn.gif ic_star-pn.jpg ic_strategicplan-ko.gif ic_sustainability-ko.gif ic_tick-pn.jpg lg_wmfootericon1-pn.jpg lg_wmregist-pn.jpg pc_boardcomposition-pn.jpg pc_ceoneo-pn.jpg ph_andresrgluski-bw.jpg ph_brucechinn-bw.jpg ph_jamescfishjr-bw.jpg ph_kathleenmmazzarella-bw.jpg ph_maryrosetsylvester-bw.jpg ph_seanemenke-bwlr.jpg ph_tombene-bw.jpg ph_victoriamholt-bwlr.jpg ph_williambplummer-bw.jpg px_26wasteproxy1pg01-bw.jpg px_26wasteproxy1pg02-bw.jpg sg_courtneyatippy-bw.jpg tb_sustain-pn.jpg http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/ecd/2025 true false