0000823768 2021-06-30 0000823768 2022-02-09 0000823768 2021-01-01 2021-12-31 shares iso4217:USD 0000823768 --12-31 2021 FY false 10-K/A true 2021-12-31 false 1-12154 Waste Management, Inc DE 73-1309529 800 Capitol Street Houston TX 77002 713 512-6200 Common Stock WM NYSE Yes No Yes Yes Large Accelerated Filer false false true false 58900000000 414586718 Ernst & Young LLP Houston, Texas 42