EQUITY - Changes in Shareholders' Equity (Details) - USD ($)
shares in Thousands, $ in Millions |
3 Months Ended |
Mar. 31, 2018 |
Mar. 31, 2017 |
| Changes in Shareholders' Equity |
|
|
| Balance, beginning of period |
$ 539
|
$ 1,082
|
| Net income (loss) |
130
|
(17)
|
| Distributions paid to noncontrolling interests |
(34)
|
(36)
|
| Other comprehensive income |
8
|
3
|
| Accretion of redeemable noncontrolling interests |
(37)
|
|
| Purchases (sales) of businesses and noncontrolling interests |
(6)
|
3
|
| Cumulative effect of accounting change |
0
|
56
|
| Stock-based compensation expense and issuance of common stock |
16
|
3
|
| Balance, end of period |
$ 616
|
$ 1,094
|
| Common Stock |
|
|
| Changes in Shareholders' Equity |
|
|
| Balances, beginning of period (in shares) |
100,972
|
99,686
|
| Balance, beginning of period |
$ 7
|
$ 7
|
| Stock-based compensation expense and issuance of common stock (in shares) |
1,017
|
735
|
| Balances, end of period (in shares) |
101,989
|
100,421
|
| Balance, end of period |
$ 7
|
$ 7
|
| Additional Paid-In Capital |
|
|
| Changes in Shareholders' Equity |
|
|
| Balance, beginning of period |
4,859
|
4,827
|
| Accretion of redeemable noncontrolling interests |
(37)
|
|
| Purchases (sales) of businesses and noncontrolling interests |
(4)
|
4
|
| Stock-based compensation expense and issuance of common stock |
15
|
3
|
| Balance, end of period |
4,833
|
4,834
|
| Accumulated Other Comprehensive Loss |
|
|
| Changes in Shareholders' Equity |
|
|
| Balance, beginning of period |
(204)
|
(258)
|
| Other comprehensive income |
8
|
3
|
| Cumulative effect of accounting change |
(43)
|
|
| Balance, end of period |
(239)
|
(255)
|
| Accumulated Deficit |
|
|
| Changes in Shareholders' Equity |
|
|
| Balance, beginning of period |
(2,390)
|
(1,742)
|
| Net income (loss) |
99
|
(53)
|
| Cumulative effect of accounting change |
43
|
56
|
| Balance, end of period |
(2,248)
|
(1,739)
|
| Treasury Stock |
|
|
| Changes in Shareholders' Equity |
|
|
| Balance, beginning of period |
(2,419)
|
(2,417)
|
| Stock-based compensation expense and issuance of common stock |
1
|
0
|
| Balance, end of period |
(2,418)
|
(2,417)
|
| Noncontrolling Interests |
|
|
| Changes in Shareholders' Equity |
|
|
| Balance, beginning of period |
686
|
665
|
| Net income (loss) |
31
|
36
|
| Distributions paid to noncontrolling interests |
(34)
|
(36)
|
| Purchases (sales) of businesses and noncontrolling interests |
(2)
|
(1)
|
| Balance, end of period |
$ 681
|
$ 664
|