|
Operating Revenue and Operating Income by Operating Segment (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2012
|
Sep. 30, 2011
|
Sep. 30, 2012
|
Sep. 30, 2011
|
|
| Segment Reporting Information [Line Items] | ||||
| Operating revenue | $ 543.9 | $ 490.4 | $ 1,602.4 | $ 1,450.1 |
| Operating income | 132.1 | 121.6 | 393.8 | 345.3 |
|
U.S. Consumer Information Solutions [Member]
|
||||
| Segment Reporting Information [Line Items] | ||||
| Operating revenue | 233.3 | 202.0 | 681.1 | 577.0 |
| Operating income | 86.1 | 74.0 | 253.6 | 206.5 |
|
International [Member]
|
||||
| Segment Reporting Information [Line Items] | ||||
| Operating revenue | 121.0 | 118.6 | 361.5 | 376.6 |
| Operating income | 33.1 | 34.7 | 106.6 | 98.7 |
|
Workforce Solutions [Member]
|
||||
| Segment Reporting Information [Line Items] | ||||
| Operating revenue | 117.0 | 102.8 | 345.9 | 298.5 |
| Operating income | 28.6 | 23.6 | 81.7 | 66.1 |
|
North America Personal Solutions [Member]
|
||||
| Segment Reporting Information [Line Items] | ||||
| Operating revenue | 51.4 | 45.5 | 151.6 | 135.1 |
| Operating income | 16.5 | 15.0 | 45.6 | 40.2 |
|
North America Commercial Solutions [Member]
|
||||
| Segment Reporting Information [Line Items] | ||||
| Operating revenue | 21.2 | 21.5 | 62.3 | 62.9 |
| Operating income | 4.0 | 5.0 | 10.3 | 14.5 |
|
General Corporate Expenses
|
||||
| Segment Reporting Information [Line Items] | ||||
| Operating income | $ (36.2) | $ (30.7) | $ (104.0) | $ (80.7) |