Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Cash and cash equivalents	$ 1,438.6	$ 1,025.8
Accounts receivable, less allowance for doubtful accounts of $117.7 and $113.5, respectively	4,224.6	5,273.1
Prepaid expenses and other assets	229.5	185.6
Total current assets	5,892.7	6,484.5
Other Assets:
Goodwill	1,178.2	1,260.1
Intangible assets, less accumulated amortization of $401.6 and $389.4, respectively	255.1	268.6
Operating lease right-of-use asset	409.1	448.5
Other assets	588.1	618.8
Total other assets	2,430.5	2,596.0
Property and Equipment:
Land, buildings, leasehold improvements and equipment	593.9	605.5
Less: accumulated depreciation and amortization	457.5	462.2
Net property and equipment	136.4	143.3
Total assets	8,459.6	9,223.8
Current Liabilities:
Accounts payable	2,243.5	2,474.9
Employee compensation payable	161.7	206.4
Accrued liabilities	499.6	545.4
Accrued payroll taxes and insurance	572.8	649.7
Value added taxes payable	419.5	504.0
Short-term borrowings and current maturities of long-term debt	40.5	61.0
Total current liabilities	3,937.6	4,441.4
Other Liabilities:
Long-term debt	1,014.3	1,012.4
Long-term operating lease liability	308.5	336.7
Other long-term liabilities	656.4	671.8
Total other liabilities	1,979.2	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 shares, issued 117,499,079 and 117,190,883 shares, respectively	1.2	1.2
Capital in excess of par value	3,388.0	3,370.6
Retained earnings	3,368.2	3,494.1
Accumulated other comprehensive loss	(479.1)	(441.0)
Treasury stock at cost, 59,446,363 and 58,517,128 shares, respectively	(3,752.3)	(3,681.9)
Total ManpowerGroup shareholders’ equity	2,526.0	2,743.0
Noncontrolling interests	16.8	18.5
Total shareholders’ equity	2,542.8	2,761.5
Total liabilities and shareholders’ equity	$ 8,459.6	$ 9,223.8