Special Charges (Details) $ in Millions | 3 Months Ended | 9 Months Ended |
Sep. 30, 2016USD ($) | Sep. 30, 2015USD ($) | Sep. 30, 2016USD ($)Store | Sep. 30, 2015USD ($) |
Restructuring Cost and Reserve [Line Items] | | | | |
Special charges | $ 1.7 | $ 0.6 | $ 3.6 | $ 26.4 |
Proceeds from partial restitution settlement | (1.3) | | | |
Proceeds from the sale of fixed assets | | | 0.6 | $ 1.3 |
NATG and EMEA Technology Products Group [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Balance beginning of period | | | 19.3 | |
Charged to expense | | | 18.8 | |
Paid or otherwise settled | | | (14.8) | |
Balance end of period | 23.3 | | 23.3 | |
Special charges | 1.4 | | 12.6 | |
NATG and EMEA Technology Products Group [Member] | Continuing Operations [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Special charges | 1.7 | | 3.6 | |
NATG and EMEA Technology Products Group [Member] | Discontinued Operations [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Special charges | (0.3) | | 9 | |
EMEA Technology Products Group [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Special charges | 1.7 | | 1.7 | |
Lease termination costs | | | 1 | |
Benefit related to rent accruals | | | (0.3) | |
Charges related to write off of inventory and fixed assets | | | 0.1 | |
NATG [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Special charges | | | 10.9 | |
Lease termination costs | 1 | | 10.8 | |
Benefit related to rent accruals | | | (3.3) | |
Proceeds from partial restitution settlement | (1.3) | | (1.3) | |
Proceeds from the sale of fixed assets | 0.5 | | $ 0.5 | |
Number of retail stores closed | Store | | | 2 | |
Settlement of vendor obligations | | | $ (1.1) | |
NATG [Member] | Minimum [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Additional wind down costs | | | 1 | |
NATG [Member] | Maximum [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Additional wind down costs | | | 2 | |
NATG [Member] | Continuing Operations [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Special charges | | | 1.9 | |
NATG [Member] | Discontinued Operations [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Special charges | | | 9 | |
Special benefits | 0.3 | | | |
NATG [Member] | Consumer Customer Lists [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Cash received for consumer customer list | | | 0.4 | |
Workforce Reductions and Personnel Costs [Member] | EMEA Technology Products Group [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Balance beginning of period | | | 0.3 | |
Charged to expense | | | 0 | |
Paid or otherwise settled | | | (0.3) | |
Balance end of period | 0 | | 0 | |
Lease Liabilities and Other Costs [Member] | EMEA Technology Products Group [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Balance beginning of period | | | 0 | |
Charged to expense | | | 1.9 | |
Paid or otherwise settled | | | (0.5) | |
Balance end of period | 1.4 | | 1.4 | |
Workforce Reductions [Member] | NATG [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Balance beginning of period | | | 2.7 | |
Charged to expense | | | 0.2 | |
Paid or otherwise settled | | | (2.8) | |
Balance end of period | 0.1 | | 0.1 | |
Lease Liabilities and Other Exit Costs [Member] | NATG [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Balance beginning of period | | | 16.3 | |
Charged to expense | | | 16.7 | |
Paid or otherwise settled | | | (11.2) | |
Balance end of period | 21.8 | | 21.8 | |
Consulting Expenses [Member] | NATG [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Special charges | | | 0.6 | |
Professional Costs [Member] | EMEA Technology Products Group [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Special charges | | | 0.6 | |
Professional Costs [Member] | NATG [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Special charges | $ 0.5 | | 0.7 | |
Severance [Member] | NATG [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Special charges | | | 0.2 | |
Additional Lease Termination Costs of Previously Exited Retail Stores [Member] | NATG [Member] | | | | |
Restructuring Cost and Reserve [Line Items] | | | | |
Special charges | | | 1.9 | |
Benefit related to rent accruals | | | $ (0.1) | |