Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Cash and cash equivalents	$ 1,099.5	$ 1,025.8
Accounts receivable, less allowance for doubtful accounts of $114.4 and $113.5, respectively	4,748.5	5,273.1
Prepaid expenses and other assets	211.1	185.6
Total current assets	6,059.1	6,484.5
Other Assets:
Goodwill	1,233.1	1,260.1
Intangible assets, less accumulated amortization of $392.5 and $389.4, respectively	260.2	268.6
Operating lease right-of-use asset	415.7	448.5
Other assets	570.4	618.8
Total other assets	2,479.4	2,596.0
Property and Equipment:
Land, buildings, leasehold improvements and equipment	584.5	605.5
Less: accumulated depreciation and amortization	446.1	462.2
Net property and equipment	138.4	143.3
Total assets	8,676.9	9,223.8
Current Liabilities:
Accounts payable	2,300.0	2,474.9
Employee compensation payable	168.2	206.4
Accrued liabilities	531.2	545.4
Accrued payroll taxes and insurance	582.0	649.7
Value added taxes payable	446.3	504.0
Short-term borrowings and current maturities of long-term debt	47.8	61.0
Total current liabilities	4,075.5	4,441.4
Other Liabilities:
Long-term debt	995.6	1,012.4
Long-term operating lease liability	316.7	336.7
Other long-term liabilities	650.1	671.8
Total other liabilities	1,962.4	2,020.9
ManpowerGroup shareholders' equity
Preferred stock, $.01 par value, authorized 25,000,000 shares, none issued	0.0	0.0
Common stock, $.01 par value, authorized 125,000,000 share, issued 117,484,181 and 117,190,883 shares, respectively	1.2	1.2
Capital in excess of par value	3,381.1	3,370.6
Retained earnings	3,495.8	3,494.1
Accumulated other comprehensive loss	(505.8)	(441.0)
Treasury stock at cost, 59,444,304 and 58,517,128 shares, respectively	(3,752.1)	(3,681.9)
Total ManpowerGroup shareholders’ equity	2,620.2	2,743.0
Noncontrolling interests	18.8	18.5
Total shareholders’ equity	2,639.0	2,761.5
Total liabilities and shareholders’ equity	$ 8,676.9	$ 9,223.8