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Accounting Policies (Details) In Millions, unless otherwise specified | 6 Months Ended |  |  |  |  | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2013 USD ($) | Jul. 01, 2012 USD ($) | Dec. 31, 2012 USD ($) | Jun. 30, 2013 EMEA reporting unit USD ($) | Jan. 31, 2013 Tekmar USD ($) | Jan. 31, 2012 Tekmar USD ($) | Jan. 31, 2012 Tekmar CAD | Jan. 31, 2012 Tekmar Maximum CAD | Jun. 30, 2013 North America USD ($) | Jul. 01, 2012 North America USD ($) | Jun. 30, 2013 Europe, Middle East and Africa (EMEA) USD ($) | Jul. 01, 2012 Europe, Middle East and Africa (EMEA) USD ($) | Jul. 01, 2012 Asia USD ($) | Jun. 30, 2013 Asia USD ($) | Dec. 31, 2012 Asia USD ($)
Gross Balance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at the beginning of the period | $ 532.4 | $ 511.8 |  |  |  |  |  |  | $ 225.6 | $ 213.8 | $ 293.9 | $ 285.3 | $ 12.7 | $ 12.9 | $ 12.9
Acquired During the Period |  | 13.1 |  |  |  |  |  |  |  | 13.1 |  |  |  |  |
Foreign Currency Translation and Other | (4.8) | (11.2) |  |  |  |  |  |  | (0.7) | (0.3) | (4.1) | (10.8) | (0.1) |  |
Balance at the end of the period | 527.6 | 513.7 |  |  |  |  |  |  | 224.9 | 226.6 | 289.8 | 274.5 | 12.6 | 12.9 | 12.9
Accumulated Impairment Losses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at the beginning of the period | (24.2) | (23.2) |  |  |  |  |  |  | (24.2) | (23.2) |  |  |  |  |
Balance at the end of the period | (24.2) | (23.2) |  |  |  |  |  |  | (24.2) | (23.2) |  |  |  |  |
Net goodwill | 503.4 | 490.5 | 508.2 | 214.8 |  |  |  |  | 200.7 | 203.4 | 289.8 | 274.5 | 12.6 | 12.9 |
Business combination |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial purchase price paid |  |  |  |  |  | 17.8 | 18.0 |  |  |  |  |  |  |  |
Aggregate consideration, net |  |  |  |  |  |  |  | 26.2 |  |  |  |  |  |  |
Purchase price allocated to goodwill |  |  |  |  | 11.7 |  |  |  |  |  |  |  |  |  |
Purchase price allocated to intangible assets |  |  |  |  | $ 10.1 |  |  |  |  |  |  |  |  |  |
Fair value of reporting unit exceeding carrying value (as a percent) |  |  |  |  |  |  |  |  |  |  | 15.00% |  |  |  |

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