| Share-based Compensation Arrangement by Share-based Payment Award, Grant Date [Domain] |
Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain] |
Management Stock Ownership Program (MSOP), Restricted Stock and Restricted Stock Units |
2006 | Share-based Compensation Arrangements by Share-based Payment Award, Grant Type [Domain] | Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | 411,562 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | 78.11 |
2007 | | Annual [Member] | Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 1,695,592 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | 77.88 |
Other [Member] | Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 22,465 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | 50.88 |
Share-based Compensation Arrangements by Share-based Payment Award, Grant Type [Domain] | Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | 90,913 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value | 77.38 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period | 37,125 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period, Weighted Average Grant Date Fair Value | 79.04 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | 2,001,581 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | 77.63 |