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v3.21.1

Commitments and Contingencies (Narrative) (Details) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2021 USD ($) claim | Mar. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Loss Contingencies [Line Items] |  |  |  |
Letters of credit outstanding | $ 235,700 |  | $ 249,700 |
Surety bonds outstanding | $ 1,600,000 |  | 1,500,000 |
Maximum product warranty in years | 10 years |  |  |
Number of individual claims managed | claim | 1,000 |  |  |
Self-insurance liabilities | $ 653,068 | $ 719,172 | 641,779 | $ 709,798
Adjustments to previously recorded reserves | (6,082) | 1,300 |  |
ROU assets | 69,000 |  | 71,300 |
Operating lease liabilities | 88,331 |  | 91,400 |
Additional ROU assets under operating leases | 1,100 | 9,600 |  |
Payments on lease liabilities | 5,300 | 5,900 |  |
Total lease expense | 10,200 | 9,900 |  |
Variable lease costs | 1,900 | 1,900 |  |
Short-term lease costs | 2,900 | $ 2,200 |  |
Other Assets |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Recorded insurance receivables | $ 73,800 |  | $ 69,500 |

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