Leases - Operating future minimum lease payments (Details) $ in Millions	Dec. 31, 2023 USD ($)
Operating Leased Assets [Line Items]
2024	$ 100.4
2025	78.2
2026	63.0
2027	48.1
2028	32.8
Later years	107.9
Total Lease Payments	430.4
Less: Interest	85.1
Present value of lease liabilities	345.3
Facilities
Operating Leased Assets [Line Items]
2024	73.3
2025	59.0
2026	48.2
2027	38.8
2028	29.3
Later years	107.6
Total Lease Payments	356.2
Less: Interest	77.3
Present value of lease liabilities	278.9
DRS devices
Operating Leased Assets [Line Items]
2024	15.2
2025	11.2
2026	8.9
2027	5.8
2028	1.9
Later years	0.0
Total Lease Payments	43.0
Less: Interest	4.5
Present value of lease liabilities	38.5
Other
Operating Leased Assets [Line Items]
2024	11.9
2025	8.0
2026	5.9
2027	3.5
2028	1.6
Later years	0.3
Total Lease Payments	31.2
Less: Interest	3.3
Present value of lease liabilities	$ 27.9

Amount of lessee's undiscounted obligation for lease payment for operating lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-6

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Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

+ References

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-1

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+ References

No definition available.

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