|
CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
In Millions, except Share data, unless otherwise specified |
Mar. 31, 2015
|
Dec. 31, 2014
|
|---|---|---|
| Maximum allowance for accounts receivable, customer (less than $1 million) | $ 1 | $ 1 |
| Other receivables, allowance (in dollars) | $ 1 | $ 1 |
| Preferred stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Preferred stock, shares authorized | 50,000,000 | 50,000,000 |
| Preferred stock, shares issued | 0 | 0 |
| Preferred stock, shares outstanding | 0 | 0 |
| Class A | ||
| Common shares, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Common shares, shares authorized | 550,000,000 | 550,000,000 |
| Common shares, shares issued | 248,000,000 | 245,000,000 |
| Common shares, shares outstanding | 248,000,000 | 245,000,000 |
| Class B | ||
| Common shares, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Common shares, shares authorized | 800,000 | 800,000 |
| Common shares, shares issued | 800,000 | 800,000 |
| Common shares, shares outstanding | 800,000 | 800,000 |