Leases - Operating future minimum lease payments (Details) $ in Millions	Dec. 31, 2021 USD ($)
Operating Leased Assets [Line Items]
2022	$ 93.8
2023	72.4
2024	55.8
2025	40.4
2026	30.7
Later years	105.0
Total Lease Payments	398.1
Less: Interest	79.0
Present value of lease liabilities	319.1
Facilities
Operating Leased Assets [Line Items]
2022	68.9
2023	55.1
2024	46.0
2025	36.7
2026	29.7
Later years	104.7
Total Lease Payments	341.1
Less: Interest	75.5
Present value of lease liabilities	265.6
Vehicles
Operating Leased Assets [Line Items]
2022	10.5
2023	6.9
2024	2.8
2025	0.9
2026	0.5
Later years	0.3
Total Lease Payments	21.9
Less: Interest	1.2
Present value of lease liabilities	20.7
Other
Operating Leased Assets [Line Items]
2022	14.4
2023	10.4
2024	7.0
2025	2.8
2026	0.5
Later years	0.0
Total Lease Payments	35.1
Less: Interest	2.3
Present value of lease liabilities	$ 32.8

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980

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- Definition

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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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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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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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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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

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+ References

No definition available.

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