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Condensed Consolidating Financial Statements - Balance Sheets (Detail) - USD ($) $ in Millions | Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
Current assets: |  |  |  |
Cash and cash equivalents | $ 3,125 | $ 3,561 | $ 57 |
Other current assets | 2,510 | 2,648 |  |
Total current assets | 5,635 | 6,209 |  |
Property and equipment, net | 12,900 | 12,893 |  |
Other assets | 8,643 | 8,641 |  |
Total assets | 27,178 | 27,743 |  |
Current liabilities: |  |  |  |
Current portion of long-term debt | 387 | 218 |  |
Accounts payable and other current liabilities | 2,683 | 2,926 |  |
Total current liabilities | 3,070 | 3,144 |  |
Long-term debt, less current portion | 13,065 | 13,280 |  |
Other liabilities | 4,298 | 4,249 |  |
Total liabilities | 20,433 | 20,673 |  |
Equity: |  |  |  |
Stockholders' equity | 6,743 | 7,068 |  |
Noncontrolling interests | 2 | 2 |  |
Total equity | 6,745 | 7,070 | $ 6,417 | $ 6,276
Total liabilities and equity | 27,178 | 27,743 |  |
Eliminations [Member] |  |  |  |
Current assets: |  |  |  |
Investments in affiliates | (53,671) | (52,894) |  |
Advances to affiliates | (18,655) | (19,047) |  |
Total assets | (72,326) | (71,941) |  |
Current liabilities: |  |  |  |
Due to affiliates | (25,664) | (26,690) |  |
Total liabilities | (25,664) | (26,690) |  |
Equity: |  |  |  |
Stockholders' equity | (53,671) | (52,894) |  |
Advances to affiliates | 7,009 | 7,643 |  |
Total equity | (46,662) | (45,251) |  |
Total liabilities and equity | (72,326) | (71,941) |  |
WM [Member] | Reportable Legal Entities [Member] |  |  |  |
Current assets: |  |  |  |
Cash and cash equivalents | 3,049 | 3,485 |  |
Other current assets | 2 | 2 |  |
Total current assets | 3,051 | 3,487 |  |
Investments in affiliates | 26,650 | 26,221 |  |
Other assets | 5 | 6 |  |
Total assets | 29,706 | 29,714 |  |
Current liabilities: |  |  |  |
Current portion of long-term debt | 164 | 15 |  |
Accounts payable and other current liabilities | 99 | 105 |  |
Total current liabilities | 263 | 120 |  |
Long-term debt, less current portion | 10,589 | 10,736 |  |
Due to affiliates | 18,818 | 19,131 |  |
Other liabilities | 2 | 4 |  |
Total liabilities | 29,672 | 29,991 |  |
Equity: |  |  |  |
Stockholders' equity | 6,743 | 7,068 |  |
Advances to affiliates | (6,709) | (7,345) |  |
Total equity | 34 | (277) |  |
Total liabilities and equity | 29,706 | 29,714 |  |
WM Holdings [Member] | Reportable Legal Entities [Member] |  |  |  |
Current assets: |  |  |  |
Other current assets | 4 | 4 |  |
Total current assets | 4 | 4 |  |
Investments in affiliates | 27,021 | 26,673 |  |
Other assets | 10 | 10 |  |
Total assets | 27,035 | 26,687 |  |
Current liabilities: |  |  |  |
Accounts payable and other current liabilities | 3 | 7 |  |
Total current liabilities | 3 | 7 |  |
Long-term debt, less current portion | 248 | 248 |  |
Due to affiliates | 137 | 214 |  |
Total liabilities | 388 | 469 |  |
Equity: |  |  |  |
Stockholders' equity | 26,647 | 26,218 |  |
Total equity | 26,647 | 26,218 |  |
Total liabilities and equity | 27,035 | 26,687 |  |
Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member] |  |  |  |
Current assets: |  |  |  |
Cash and cash equivalents | 76 | 76 |  |
Other current assets | 2,504 | 2,642 |  |
Total current assets | 2,580 | 2,718 |  |
Property and equipment, net | 12,900 | 12,893 |  |
Advances to affiliates | 18,655 | 19,047 |  |
Other assets | 8,628 | 8,625 |  |
Total assets | 42,763 | 43,283 |  |
Current liabilities: |  |  |  |
Current portion of long-term debt | 223 | 203 |  |
Accounts payable and other current liabilities | 2,581 | 2,814 |  |
Total current liabilities | 2,804 | 3,017 |  |
Long-term debt, less current portion | 2,228 | 2,296 |  |
Due to affiliates | 6,709 | 7,345 |  |
Other liabilities | 4,296 | 4,245 |  |
Total liabilities | 16,037 | 16,903 |  |
Equity: |  |  |  |
Stockholders' equity | 27,024 | 26,676 |  |
Advances to affiliates | (300) | (298) |  |
Noncontrolling interests | 2 | 2 |  |
Total equity | 26,726 | 26,380 |  |
Total liabilities and equity | $ 42,763 | $ 43,283 |  |

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