Plant City and Colonsay Closure Costs (Notes)	12 Months Ended
Dec. 31, 2022
Plant City and Colonsay Closure Costs [Abstract]
Restructuring, Impairment, and Other Activities Disclosure [Text Block]	MINE CLOSURE COSTSDue to increased brine inflows, on June 4, 2021, the Company made the decision to accelerate the timing of the shutdown of our K1 and K2 mine shafts at our Esterhazy, Saskatchewan potash mine. Closing the K1 and K2 shafts are key pieces of the transition to the K3 shaft, but the timeline for the closure was accelerated by approximately nine months. In 2021, we had pre-tax costs of $158.1 million related to the permanent closure of these facilities. These costs consisted of $109.9 million related to the write-off of fixed assets, $37.1 million related to AROs, and $11.1 million related to inventory and other reserves. In the third quarter of 2021, we resumed production at our previously idled Colonsay potash mine to offset a portion of the production lost by the early closure of the K1 and K2 shafts at Esterhazy.

Plant City and Colonsay Closure Costs (Notes)

12 Months Ended

Dec. 31, 2022

Plant City and Colonsay Closure Costs [Abstract]

Restructuring, Impairment, and Other Activities Disclosure [Text Block]

MINE CLOSURE COSTSDue to increased brine inflows, on June 4, 2021, the Company made the decision to accelerate the timing of the shutdown of our K1 and K2 mine shafts at our Esterhazy, Saskatchewan potash mine. Closing the K1 and K2 shafts are key pieces of the transition to the K3 shaft, but the timeline for the closure was accelerated by approximately nine months. In 2021, we had pre-tax costs of $158.1 million related to the permanent closure of these facilities. These costs consisted of $109.9 million related to the write-off of fixed assets, $37.1 million related to AROs, and $11.1 million related to inventory and other reserves. In the third quarter of 2021, we resumed production at our previously idled Colonsay potash mine to offset a portion of the production lost by the early closure of the K1 and K2 shafts at Esterhazy.