Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Current Assets:
Cash and cash equivalents	$ 179.0	$ 102.4
Marketable securities	52.6	57.2
Trade accounts receivable—net of allowance of $7.0 million and $15.0 million, respectively	541.1	575.7
Other receivables	30.3	61.9
Current portion of lease receivables—net of allowance of $0.9 million and $1.0 million, respectively	88.1	93.3
Inventories—net	83.3	117.9
Prepaid expenses and other current assets	113.4	102.5
Total current assets	1,087.8	1,110.9
Property and equipment:
Transportation equipment	3,852.3	3,781.0
Land, buildings, and improvements	231.7	226.1
Other property and equipment	182.3	180.2
Total property and equipment	4,266.3	4,187.3
Less accumulated depreciation	1,685.1	1,605.6
Net property and equipment	2,581.2	2,581.7
Lease receivables	142.7	130.2
Internal use software and other noncurrent assets	431.3	402.7
Goodwill	331.7	331.7
Total noncurrent assets	3,486.9	3,446.3
Total Assets	4,574.7	4,557.2
Current Liabilities:
Trade accounts payable	208.5	241.3
Accrued salaries, wages, and benefits	91.1	66.7
Claims accruals—current	96.4	89.2
Current maturities of debt and finance lease obligations	139.0	104.5
Other current liabilities	122.2	104.5
Total current liabilities	657.2	606.2
Noncurrent Liabilities:
Long-term debt and finance lease obligations	124.7	197.6
Claims accruals—noncurrent	159.4	92.7
Deferred income taxes	569.0	595.7
Other noncurrent liabilities	97.2	108.2
Total noncurrent liabilities	950.3	994.2
Total Liabilities	1,607.5	1,600.4
Shareholders’ Equity:
Additional paid-in capital	1,600.5	1,595.2
Retained earnings	1,466.0	1,431.9
Accumulated other comprehensive loss	(2.9)	(3.4)
Treasury stock, value	(96.4)	(66.9)
Total Shareholders' Equity	2,967.2	2,956.8
Total Liabilities and Shareholders’ Equity	4,574.7	4,557.2
Preferred Stock
Shareholders’ Equity:
Preferred stock	0.0	0.0
Class A Common Shares
Shareholders’ Equity:
Common stock	0.0	0.0
Class B Common Stock
Shareholders’ Equity:
Common stock	$ 0.0	$ 0.0

Land buildings and improvements.

No definition available.

Name:	sndr_LandBuildingsAndImprovements
Namespace Prefix:	sndr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).