|
Share-based Compensation - Outstanding Options Issued (Detail)
In Millions, except Share data, unless otherwise specified |
12 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2012
EUR (€)
|
Dec. 31, 2012
Exercise Price 1 [Member]
EUR (€)
|
Dec. 31, 2012
Exercise Price 2 [Member]
EUR (€)
|
Dec. 31, 2012
Post-IPO Plan [Member]
Exercise Price 1 [Member]
USD ($)
|
Dec. 31, 2012
Post-IPO Plan [Member]
Exercise Price 2 [Member]
USD ($)
|
Dec. 31, 2012
Post-IPO Plan [Member]
Exercise Price 3 [Member]
USD ($)
|
Dec. 31, 2012
Post-IPO Plan [Member]
Exercise Price 4 [Member]
USD ($)
|
Dec. 31, 2012
Post-IPO Plan [Member]
Exercise Price 5 [Member]
USD ($)
|
Dec. 31, 2012
Post-IPO Plan [Member]
Exercise Price 6 [Member]
USD ($)
|
Dec. 31, 2012
Post-IPO Plan [Member]
Exercise Price 7 [Member]
USD ($)
|
Dec. 31, 2012
Post-IPO Plan [Member]
Exercise Price 8 [Member]
USD ($)
|
Dec. 31, 2012
Post-IPO Plan [Member]
Exercise Price 9 [Member]
USD ($)
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||||||||
| Year granted | 2012 | 2012 | 2012 | 2012 | 2011 | 2011 | 2011 | 2011 | 2010 | |||
| Exercise price | $ 23.49 | $ 22.62 | $ 26.32 | $ 21.63 | $ 25.01 | $ 31.81 | $ 19.78 | $ 16.84 | $ 13.27 | |||
| Shares | 4,047,450 | 197,550 | 158,930 | 493,865 | 86,492 | 61,040 | 82,365 | 3,298,913 | 2,483,509 | |||
| Intrinsic value | € 61 | € 29 | € 32 | $ 11 | $ 1 | $ 2 | $ 1 | $ 31 | $ 32 | |||
| Weighted average remaining contractual term | 9 years 9 months 18 days | 9 years 7 months 6 days | 9 years 3 months 18 days | 9 years 1 month 6 days | 8 years 1 month 6 days | 8 years 3 months 18 days | 8 years 7 months 6 days | 8 years 9 months 18 days | 7 years 9 months 18 days | |||